1 d
Illustrative mathematics unit 2 lesson 2?
Follow
11
Illustrative mathematics unit 2 lesson 2?
The purpose of this activity is for students to complete a tape diagram and describe the features of tape diagrams. They study graphs and equations of the same function and make connections between factors and zeros. 2: If We Know This, Then We Know That. They then use their insight from the matching activity to generate diagrams for expressions without a match and to find their values (MP2). The unit concludes with a study of polynomial identities and deriving the formula for the sum of the first \(n\) terms in a geometric sequence. Unit Goals. Problem 3 Han and Priya were making a kite. (This answer will be more exact than the point you found in the. The purpose of this activity is for students to find the value that makes an addition or subtraction equation true, with totals of 20. The purpose of this activity is for students to compare groups of up to 20 objects. Step 2, horizontal side, 10 inches. I with this in-depth look at our new K-5 curriculum. The mathematical purpose of this lesson is to elicit and build on students' previous understandings and experiences with organizing and representing data. Students have the opportunity to decide to use a table, equation, graph, or a combination of the three to make sense of and reason about the situation (MP5). Unit 2. The purpose of this activity is for students to explore the relationship between addition and subtraction through a Compare, Difference Unknown story problems. Students use appropriate tools strategically as they choose which objects to. Narrative. Making graphing technology available gives students opportunity to choose appropriate tools strategically (MP5) Arrange students in groups of 2. Launch. Give each group 3 colored pencils "Take a few quiet minutes to answer the first 4 questions. They learn to interpret the meaning of asymptotes in context and strategies for solving rational equations. The purpose of this activity is for students to interpret and solve a story problem by adding or subtracting within 100. "In an earlier lesson, we thought about how shapes could be composed using equal-size smaller shapes "Today, we are going to decompose shapes into equal pieces and name the pieces "Each of you has 3 rectangles. Are you brainy enough to get a perfect score on this basic math test? If you think you're up for it, we have lined out 35 great questions for you to prove to yourself that you are. Triangle is congruent to triangle. Unit 1. Display the equations for all to see. Algebra 1 Lessons that correlate with McGraw Hill, Kendall Hunt, and Imagine Learning and LearnZillion Algebra 1 course based on Illustrative Mathematics con. In this lesson, students attend to precision when they refer to figures in their construction using mathematical terms and labeled points (MP6). Sometimes, however, we choose specific ranges for the axes in order to see specific information. Activity In this activity, students examine the relationship between the length of the diagonal and the perimeter for squares of different sizes. In previous units in grade 2, students used the words compose and decompose as they made and broke apart tens when they added and subtracted within 100. "We are going to learn a new center called Shake and Spill. Students get sets of 6, 7, and 9 counters. Illustrative Mathematics Grade 6 - Unit 2- Lesson 10Open Up Resources (OUR)If you have any questions, please contact me at dhabecker@gmail In this lesson, students have reviewed square and cube roots in geometric contexts. Students get sets of 6, 7, and 9 counters. Grade 2 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9 Monitor for students who show Priya's money in different ways to share in the Lesson Synthesis Andre emptied his pockets and found these coins The Illustrative Mathematics name and logo are not subject to the Creative Commons license. Sep 7, 2023 · This video explains the practice problems from Unit 2, Lesson 2 of the 7th Grade Illustrative Math curriculum2more. Lesson 1. When you do, you need to know which ones are appropriate for your outfit. In this lesson students use the numbers on the horizontal and vertical axes to describe the location of points in the plane and then learn that these numbers are called the coordinates of points. Students begin by revisiting ways to calculate a given percentage of a given number, in preparation. For example, students may notice that the two circles have the same radius, and use that fact to explain why segment is cut into three congruent segments. Launch. In particular, highlight why testing the value of the function at works, building off the conclusion of the previous activity. Activity. These slips can be reused from one class to the next. Listen for and amplify any questions involving the congruence of corresponding parts. The purpose of this activity is for students to write a polynomial to model a simple investment situation. When students compare and explain their estimates in pairs and in the full class discussion they make, interpret, and defend mathematical claims (MP3). Sep 7, 2023 · This video explains the practice problems from Unit 2, Lesson 2 of the 7th Grade Illustrative Math curriculum2more. Lesson 1. 1: Notice and Wonder: Transformed Rectangles. Activate background knowledge about the Pythagorean theorem and trigonometric ratios. Sep 7, 2023 · This video explains the practice problems from Unit 2, Lesson 2 of the 7th Grade Illustrative Math curriculum2more. Lesson 1. 3Cd The purpose of this activity is for students to consider a strategy to find a missing side length of a figure composed of rectangles. After each problem, give students 1 minute of quiet think time followed by a. Tell students to give a signal when they have an answer and a strategy. They study graphs and equations of the same function and make connections between factors and zeros. Search #722math in YouTube to f. Alg1. Adding, Subtracting, and Working with Data. Lesson Narrative The activities in the lesson are intended to support initial, informal conversations about the key ideas in proportional relationships before the next lesson introduces the terms for those ideas. Segment is 2 centimeters7 centimeters. Grade 4 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Lesson Purpose. In this lesson, students attend to precision when they refer to figures in their construction using mathematical terms and labeled points (MP6). Building on this work, students investigate rational functions. The purpose of this activity is for students to make sense of 100 when represented as 100 ones, 10 tens, or 1 unit of a hundred with base-ten blocks or base-ten diagrams. Represent and Solve Story Problems. The work here progresses in two ways—in terms of the complexity of the relationships and in terms of the amount of scaffolding built into the prompts. In previous lessons, students explored different methods for addition and subtraction with and without composing or decomposing a ten. +3(4^{n-1})\) along with the first three iterations of the Koch Snowflake from the warm-up for all to see. 3 minutes: partner work time. This gives students the opportunity to review the two methods. What do you notice? What do you wonder? 1. They learned that a single base-ten block is a centimeter cube because each edge of the cube is 1 centimeter long. Alg1. Each table is partially filled out to show certain behaviors of the sums and highlight some properties of operations. Use place value understanding to compose and decompose three-digit numbers Compare and order three-digit numbers using place value understanding and the relative position of numbers on a number line. Many of the problems encourage students to think in steps, interpreting a fraction [Math Processing Error] in terms of division by the denominator. Section B Goals. Family Support Materials. Are the number of toys and number of batteries in a proportional relationship? If so, what are the two constants of proportionality? If not, explain your reasoning. For example, students may notice that the two circles have the same radius, and use that fact to explain why segment is cut into three congruent segments. Launch. In Salt Lake City, it is colder than it is in Houston. Problem 7. Meanwhile each point stays on ray but its distance from doubles (because the scale factor is 2). Arrange students in groups of 2. Step 1: Step 2: Describe the move that Diego made to get each equivalent system. Using the number lines students created in a previous lesson, students represent numbers by placing counters as points on the number line. This activity encourages students to reason about equivalent ratios in a context. This function shows different end behavior in the positive and negative directions. "Today we used what we have learned to find the value of expressions involving multiplication of whole numbers and fractions greater than 1 written as mixed numbers Display: 7 \frac {3} {5} \times 6. Adobe Illustrator's Line Segment and Pen tools create vector paths, but their overlapping capabilities also differ. By now, students are aware that a relationship between two or more quantities can be expressed in multiple ways by writing equivalent equations. The sequence 100, 20, 4, 0. Create a set of cards from the blackline master for each group of 2 Groups of 2. Problem 2 The surface area \ (S (r)\) in square units of a cylinder with a volume of 18 cubic units is a function of its radius \ (r\) in units where \ (S (r)=2\pi r^2+\frac {36} {r}\). Making More New, True Equations These materials, when encountered before Algebra 1, Unit 2, Lesson 14 support success in that lesson. They analyze and interpret given equations, write equations to represent relationships and constraints (MP4), and work to solve these equations. ) Multiply by 20 and 13 to get rows 2 and 3. Narrative This warm-up prompts students to compare four images. Lesson Narrative In Activity 1, students learn a new center called Number Puzzles in which they use number cards to make addition and subtraction equations true. Triangle is congruent to triangle. Unit 1. In Salt Lake City, it is colder than it is in Houston. Problem 7. This handy illustrated guide breaks down the nuance of. mansfield news journal obituary The unit concludes with a study of polynomial identities and deriving the formula for the sum of the first \(n\) terms in a geometric sequence. Unit Goals. Lesson Narrative The activities in the lesson are intended to support initial, informal conversations about the key ideas in proportional relationships before the next lesson introduces the terms for those ideas. Illustrative Mathematics Grade 6 Open Up Resources OURUnit 2 Lesson 11More resources available at: mathhelpcom Lesson Narrative. When you do, you need to know which ones are appropriate for your outfit. In future lessons, students will focus on what a non. Each table is partially filled out to show certain behaviors of the sums and highlight some properties of operations. (Your cut does not need to be perpendicular to the side of the paper. The Illustrative Mathematics name and logo are not subject to the Creative Commons license and may not be used without the prior and express written consent of Illustrative Mathematics. Technology isn't required for this lesson, but there are opportunities for students to choose to use. ) Connect the points as smoothly as you can. Students add and subtract within 100 using strategies based on place value, properties of operations, and the relationship between addition and subtraction. In this lesson, students describe rectangles in terms of the rows and columns. 2: If We Know This, Then We Know That. Make a group that has fewer objects, a group that has the same number of objects, and a. This helps make explicit the reasoning behind some of the work students are doing in the associated Algebra 1 lesson Display Andre's work for all to see. and both measure 4 units. Students may continue to choose stages that. Narrative. Students work on a circular grid with center of dilation at the center of the grid. The main ideas to develop in this lesson are techniques for finding a unit price, and the things that can be done once a unit price is known. The minimum wage rate is a hotly debated topic in many countries, as it directly affects the livelihoods of millions of workers. The Adobe Illustrator CS5 Perspective Grid tool displays a grid over the active image, enabling you to create a 3-D graphic. Sep 7, 2023 · This video explains the practice problems from Unit 2, Lesson 2 of the 7th Grade Illustrative Math curriculum2more. Lesson 1. She knows that if she can prove triangles congruent that include the diagonals, then she will show that diagonals are also congruent The Illustrative Mathematics name and logo are not subject to the Creative Commons license and. bdo treasure chest map Students used base-ten blocks, drawings, and equations to represent their methods. Design Principle (s): Maximize meta-awareness; Support sense-making. This warm-up picks up where the previous lesson ended asking students to calculate the sum of the first 50 terms of two different sequences, but with less scaffolded support The Illustrative Mathematics name and logo are not subject to the Creative Commons license and may not. (From Unit 3, Lesson 2 A square has side length \(\sqrt{82}\) cm. Students solve an Add To, Start Unknown problem, one of the more difficult problem types from grade 1. The solution to this equation is also 2 We can say that \(2p + 010\) and \(6p + 130\) are equivalent equations because they have exactly the same solution80, no other values of \(p\) make either equation true. In this lesson, they reason in similar ways—using numerical and visual representations—about non-unit fractions and fractions that are greater than 1. If time permits, separate the triangle cards from each set in advance. "Give me a signal when you have an answer and can explain how you got it 1 minute: quiet think time Problem 6. It gives the teacher an opportunity to hear how students use terminology and talk about characteristics of the items in comparison to one another. Find the temperatures in these other cities. Display a circle with 2 cm diameter and explain that it will represent Earth. Lesson 1: Multiples of a Number Lesson. Students go back and forth between equations, situations, and diagrams, interpreting. Geo. Triangle is congruent to triangle. Unit 1. Some students may make comparisons by writing equivalent fractions, which shows they are applying learning from earlier in the unit. Equation 2: Games cost $ 2. ayvacik naldoken koyu satilik ev (From Unit 1, Lesson 15 In the picture lines \(AB\) and \(CD\) are parallel. Students add and subtract within 100 using strategies based on place value, properties of operations, and the relationship between addition and subtraction. This gives students the opportunity to revisit the meaning of estimation and estimate before making estimations on their own. 😉 Tutorial support for teachers and parents, Grade 7, Unit 2, Lesson 7 "Comparing Relationships with Tables" Illustrative Mathematics tutorial Unit 2. Students also make connections between the multiplicative comparison language and multiplication. Tour the teacher materials, demonstrate the lesson structure from warm-up to cool down, and see how centers support math fluency. One subject that has greatly benefited from this shift is mathematics A number story is a short story that illustrates a math equation, making it easier for young students to understand the equation involved. 1: Notice and Wonder: Transformed Rectangles. Let sit for 10 minutes before serving. 3: Fractional Powers Are Just Numbers. In this lesson, students describe rectangles in terms of the rows and columns. 50 each and food tickets cost $ 3 The family pays a total of $ 90 for the tickets. Unit 2. It gives the teacher an opportunity to hear how students use terminology and talk about characteristics of the items in comparison to one another. Adding and Subtracting within 100 Decompose to Subtract. Family Support Materials. ) Connect the points as smoothly as you can. $ 500 is deposited at the start of the first year, an additional $ 200 is deposited at the start of the next year, and $ 600 at the start. They may also use their knowledge about fractions. Three of the equations all have , and so the graph of the polynomial near looks quadratic, and we say that the factor has a multiplicity of 2. In this unit, students learn to understand and use the terms "proportional," "constant of proportionality," and "proportional relationship," and recognize when a relationship is or is not proportional. In an earlier variation, students asked and answered "how many" questions about groups of images in different arrangements.
Post Opinion
Like
What Girls & Guys Said
Opinion
13Opinion
Family Support Materials. Display the expressions for all to see. Representation: Internalize Comprehension. Shade 20 hundredths on the 10-by-10 grid and write 0. They learn to interpret the meaning of asymptotes in context and strategies for solving rational equations. While four problems are given, it may not be possible to share every strategy. This relationship between multiplication and division is the focus of the next several lessons. Display the figures for all to see. Unit 2. AddressingG1 The purpose of this activity is for students to draw quadrilaterals, pentagons, and hexagons and compare the attributes of different shapes that have the same number of sides. Students connect the language they used to describe the situation to multiplication and division expressions. The given equation is linear and is relatively straightforward. Students use diagrams of fraction strips, which allow them to see and reason about fractions that are the same size. Activity 2: Gather a connecting cube to display in the activity synthesis. The purpose of this activity is for students to learn that when you partition a shape into 2, 3, or 4 equal pieces, the whole shape can be named as 2 halves, 3 thirds, 4 fourths respectively. They use long division to write fractions presented in the form as decimals, e Students can use math tools that they have been introduced to or classroom objects such as crayons, paper clips, and buttons. amex platinum schwab 1: Notice and Wonder: Transformed Rectangles. The minimum wage rate is a hotly debated topic in many countries, as it directly affects the livelihoods of millions of workers. Write a new equation that, when added to 50 +1 = 51, gives a sum that is also a true equation. They may also use their knowledge about fractions. Students consider the difference in size between the same amount of square inches and square centimeters, then they measure the. In this lesson, students find unknown addends within 20 and continue developing fluency with addition and subtraction within 20. Students revisit the meaning of numerator and denominator, name unit fractions, create representations for them, and recall some strategies and tools for reasoning about fractions. Tour the teacher materials, demonstrate the lesson structure from warm-up to cool down, and see how centers support math fluency. Grade 2 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9 The purpose of this lesson is for students to solve story problems involving addition and subtraction within 100 without composing or decomposing a ten The Illustrative Mathematics name and logo are not subject to the Creative Commons license and may. Engineers, computer scientists, physicists, and economists often make simplifying assumptions as they tackle complex problems involving. Invite 2-3 students to share their solution process. The purpose of this activity is for students to make connections between the polynomial division reasoning they did in the previous lesson and polynomial long division. therapy aid cognitive distortions "Share your responses to both questions with your partner. What is the measure of angle ? This lesson is designed to anchor students' perception of standard units of length, volume, weight, and mass with a collection of familiar objects that they can refer to in later lessons in preparation for using ratio reasoning to convert measurement units. (From Unit 2, Lesson 7 Noah was assigned to make 64 cookies for the bake sale. The density of water is 1 gram per cm 3. Angle is 120 degrees. Remind students that they are examples of inequalities written and solved in the lesson29p+44x \leq 5\) and. Through many concrete examples, students learn to identify geometric and arithmetic sequences. MLR8 Discussion Supports. Unit Goals. These understandings help students develop fluency and will be helpful later in this lesson and future lessons when students show their thinking on the number line. In the launch, students make sense of how different features of the floor plan such as windows, doors, and furniture are visually represented. In this lesson and in upcoming work on ratios and unit rates, students will be asked to find a fraction of a number and identify fractions on a number line Display one problem at a time. In previous lessons, students solved rectangular area problems. The purpose of this activity is to emphasize the importance of identifying the length of a unit when measuring (MP6). Child prodigies have always fascinated us with their extraordinary talents and abilities at such a young age. After matching expressions and diagrams in a card-sort activity, they practice using diagrams and expressions to find the result of multiplying a whole number and a fraction. Family Support Materials. 2 Polynomials and Rational Functions. Adding and Subtracting within 100 Decompose to Subtract. For some problems, one representation is easier to use than others. In Activity 2, students choose from centers previously introduced that focus on adding and subtracting within 10. private property rentals by owner In this lesson, students further explore tiling and learn that, when measuring area, squares that are used to tile a figure can't overlap. Unit 2 Notetaking Guide. In this lesson, students find different combinations of coins that have a value of 100 cents. "Record your assigned shape in the four blanks in the second problem The purpose of this Choral Count is to invite students to practice counting by 10 and notice patterns in the count. "Work with your group to make a poster about the numbers that were used in the tables 5 minute: group work time. You may choose any two equations you want 8-10 minutes: partner work time. To triple this recipe, we would use 15 cups of cranberry juice with 6 cups of soda water. In words, however, it is usually read as one hundred fifty thousandths. Covering a region completely without gaps or overlaps. Algebra 1 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6. Monitor for students using precise language, either orally or in writing, during work time to invite to share during the whole-class discussion. Congruent Parts, Part 1. The mathematical purpose of this activity is to represent and analyze data with histograms. They use what they know about place value to make sense of two different ways for finding the same difference (MP7). Some diagrams match more than one expression. Add and Subtract Within 20; Ways to Represent Data; Diagrams to Compare; Unit 2 The Illustrative Mathematics name and logo are not subject to the Creative Commons license and may not be used without the prior and express written consent of Illustrative Mathematics.
For some problems, one representation is easier to use than others. HowStuffWorks Illustrated: Hurricane Categories Apollo. Download PDF of Student Edition. Then, discuss your responses with your partner "Be prepared to explain how you know what fractions the diagrams represent 2-3 minutes: independent work time on the. Tell them they are allowed to reuse numbers and units. Researchers have devised a mathematical formula for calculating just how much you'll procrastinate on that Very Important Thing you've been putting off doing. See full list on curriculum. Illustrative Mathematics Grade 6 Open Up Resources OURUnit 2 Lesson 11More resources available at: mathhelpcom Lesson Narrative. showing ufc near me Researchers have devi. In this lesson, students to make sense of the product of a whole number and a non-unit fraction. Students may use the ruler to create tick marks along the sides of the rectangle to help them visualize square units or multiply the side lengths. Narrative. Give students 1-2 minutes to write their own mathematical questions about the situation. donut shops near my location This lesson is optional because it revisits below grade-level content. Illustrative Mathematics Grade 6 - Unit 2- Lesson 7Open Up Resources (OUR)If you have any questions, please contact me at dhabecker@gmail Activity This activity continues work done in the previous lesson that connected various representations of proportional relationships including images, equations, and descriptions. 52K subscribers Subscribed 14 3. By the time kids graduate high school, they'll have learned how to solve complex math problems, construct critical essays, and maybe even write their own programs According to a new survey, the United States Postal Service (USPS), Amazon and Google are ranked as the most trusted brands in America. Here's some lessons. About IM; In the News; Curriculum The Illustrative Mathematics name and logo are not subject to the Creative Commons license and may not be used without the prior and express written. Problem 1. Tell them that, in this activity, they will sort some cards into categories of their choosing. Consider gathering only two or three different strategies per problem, saving most of the time for the. solazoal Based on these understandings, two ideas will be relevant to future work in the unit and are important to emphasize during discussions: Dividing by a number is the same as multiplying by its reciprocal. These understandings help students develop fluency with the count sequence and will be helpful as students begin working with numbers beyond 10 "Count by 10, starting at 0. Students begin by interpreting an image in which the multiplier (3) and the numbers are given. 😉 6th Grade, Unit 2, All Lessons 1-16, Introducing Ratios. Students will not need connecting cubes for this activity. Problem 2. Students have the opportunity to decide to use a table, equation, graph, or a combination of the three to make sense of and reason about the situation (MP5). Unit 2. If a student's collection was shared in the previous activity synthesis, give that student a new collection of objects for this activity. In Salt Lake City, it is colder than it is in Houston. Problem 7.
Kindergarten Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Lesson 2. 20 (twenty hundredths) above it. Building on this work, students investigate rational functions. Divide each entry in the first row by 8, yielding the pair 25 can be called the unit rate, since 1. B: The 2 sides and the included angle of one triangle are congruent to 2 sides and the included angle of another triangle. " 7 minutes: independent work time; Monitor for students who: Required Preparation. Represent and solve problems involving the multiplication of a whole number by a fraction or mixed number. 1 right angle, 2 acute angles 3 sides. They attached the wood like this: In both grade levels, the context of the problem played a significant role in how students reasoned and notated the problem and solution. The graph intersects the vertical axis at 40 and the -2. In this lesson, they see that depending on the quantity in which we are interested, one form of equation might be more useful than others. In this lesson and in upcoming work on ratios and unit rates, students will be asked to find a fraction of a number and identify fractions on a number line Display one problem at a time. Ben Bernanke just delivered what looks to be one of his final official speeches before the end of his term as Federal Reserve chair on Jan The speech is a nice, long history l. What was done to the original system to get the system in Step 1? Explain why the system in Step 1 shares a solution with the original system. In this lesson, students are introduced to rational functions through the context of calculating the minimum surface area for a can with a specific volume. Then, answer the questions in your workbook 5-8 minutes: partner work time. HowStuffWorks Illustrated: Hurricane Categories Apollo. Here is a system of equations: To solve this system, Diego wrote these equivalent systems for his first two steps. The remainders for division in this activity continue to be zero since the focus is on dividing by known linear factors. Pause for directions from your teacher before completing the graphic organizer Angle and angle are both 30°. houses for sale the sidings hull They then use what they know to solve story problems. Activity. Work with your partner to justify your choices. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Unit 2. Students add and subtract within 100 using strategies based on place value, properties of operations, and the relationship between addition and subtraction. The purpose of this activity is for students to make sense of a problem before solving it by familiarizing themselves with a context and the mathematics that might be involved (MP1). 1: Notice and Wonder: Transformed Rectangles. What do you notice? What do you wonder? 1. Explain that for each situation, the task is to find one equation that represents it. This lesson activates students' prior knowledge of unit fractions and includes fractions with new denominators 5, 6, 10, and 12. To pin down a quantity of interest may mean. Lesson Narrative. In the first activity, students sort graphs on cards based on what. Students continue to practice using comparison language during the activities. Lesson Narrative. 2: If We Know This, Then We Know That. What is the measure of angle ? This lesson is designed to anchor students' perception of standard units of length, volume, weight, and mass with a collection of familiar objects that they can refer to in later lessons in preparation for using ratio reasoning to convert measurement units. 360 encourages the problem-solving skills students need to better understand the real world. Representation: Develop Language and Symbols. accident on 7th street today Students begin by revisiting ways to calculate a given percentage of a given number, in preparation. Required Preparation. Choose a student to be your partner. Interest is quite possibly the most complex bit of math that the average person has to use everyday. Adding, Subtracting, and Working with Data. In this lesson, students learn that some numbers of objects can be split into multiple groups of 2 (pairs) without any incomplete pairs. Students have the opportunity to decide to use a table, equation, graph, or a combination of the three to make sense of and reason about the situation (MP5). Unit 2. In the second half of the unit, students learn about logarithms in base 2 and 10 as a way to express the exponent that makes an exponential equation true. After each problem, give students 1 minute of quiet think time followed by a. Arrange students in groups of 2. They learn to interpret the meaning of asymptotes in context and strategies for solving rational equations. Use a calculator to evaluate for different values of until it equals 262,144. In this unit, students learn to understand and use the term "dilation," and to recognize that a dilation is determined by a point called the "center" and a number called the "scale factor They learn that under a dilation, the image of a circle is a circle and the image of a line. The purpose of this activity is for students to demonstrate methods they have for addition and subtraction within 10.