Answer Key • Lesson 2: Tangrams

1 Student GuideTangrams (SG p. 303)Questions 1 tangram designs will * Students sorts will vary. See the Lesson Part 1 for some possible (SG p. 304)Questions 1 will vary. Possible response: Theother pieces that could go with the largetriangle are the other large triangle, themedium triangle, and the two small trianglesbecause they all have 3 sides. Another possibleresponse: The other large triangle because theyare a put all of the pieces with right anglesin one group, and the parallelogram with noright angles in the other put all the 3-sided shapes in one groupand all the 4-sided shapes in the other will vary. Possible response: Theyare alike because they have 4 corners and4 angles, and they are different because thesquare has 4 lines of symmetry and theparallelogram has no lines of will vary. Possible response: All thepieces except the parallelogram can begrouped together because they have at leastone right Grade 3 Unit 11 Lesson 2 Answer Key 1 Answer Key Lesson 2: Tangrams * answers and/or discussion are included in the Grade 3 Unit 11 Lesson 2303 Copyright Kendall Hunt Publishing CompanyTangramsThe tangram is an old Chinese puzzle that has seven pieces called tans:These tans can be put together in many ways.

2 Designs made with thesepieces are called Tangrams look like animals or other realthings. Usually, all seven tans are used. The only rule is that the pieces musttouch without overlapping. You may be able to find a book with Tangrams atthe all 7 tans to make a the 7 tangram pieces in any way you the groups on the tangram Sortpage in the Student Activity Guide- Page 303 Think about the set of tangram pieces when you Answer the is sorting her tangram pieces. What other pieces can be groupedwith the Large Triangle? Explain why you chose to group those sorted her pieces into the two groups below. Explain why shegrouped them that sorted his pieces into the two groups below. Explain why hegrouped them that wondered, How are these 2 tans alike and how are theydifferent? What would you tell him? grouped all 7 tangram pieces together.

3 They all have corners, she said. Think about the pieces corners and sort them a differentway. Explain why you grouped them the way you TriangleSG Grade 3 Unit 11 Lesson 2 Tangrams304 Copyright Kendall Hunt Publishing CompanyStudent Guide- Page 304 Copyright Kendall Hunt Publishing CompanyAnswer Key Lesson 2: Tangrams2 TG Grade 3 Unit 11 Lesson 2 Answer Key* answers and/or discussion are included in the Activity BookTangram Sort (SAB p. 419)Questions 1 2*See Lesson Guide Part 1 for possible of Tans (SAB pp. 421 422) Questions 1 2*See Figure 5 in the Lesson for the areas of the tans. See Figure 6 in the lessonfor possible answers to Question all 7 tangram pieces. Trace the tans to record the each separate how you decided to sort your Grade 3 Unit 11 Lesson 2419 Copyright Kendall Hunt Publishing CompanyStudent Activity Book- Page 419 NameDateTangramsSAB Grade 3 Unit 11 Lesson 2421 Copyright Kendall Hunt Publishing CompanyArea of the area of each tan on the Activity Book- Page 421 Larger the large triangle with tans.

4 Trace each shape and label it withthe Grade 3 Unit 11 Lesson 2 TangramsDRAFT Copyright 2012 TIMS Project, Inc. DO NOT DISTRIBUTE422 Student Activity Book- Page 422 Copyright Kendall Hunt Publishing CompanyTG Grade 3 Unit 11 Lesson 2 Answer Key 3 Answer Key Lesson 2: TangramsStudent Activity BookMake and Measure (SAB p. 423)HomeworkQuestions 1 shapes and their areas will can use the area of the small triangleor the Area of tangram Pieces chart to find thetotal area of the shape. For the sample shape inQuestion 1, the area is 8 square sq. sq. sq. sq. sq. and MeasureCut out the tangram pieces. Choose only 5 of the pieces and make adesign. Glue it onto another piece of paper. Then Answer the is the area of your design? did you find the area of your design?NameDateTangramsSAB Grade 3 Unit 11 Lesson 2423 Copyright Kendall Hunt Publishing Company1 square inchStudent Activity Book- Page 423 Copyright Kendall Hunt Publishing CompanyAnswer Key Lesson 2: Tangrams 4 TG Grade 3 Unit 11 Lesson 2 Answer KeyCopyright Kendall Hunt Publishing CompanyTeacher GuideFind the Area (TG pp.)

5 1 2) Questions 1 square may use the area of the smalltriangle to find the area of the square inchesNameDateAssessment MasterFind the AreaUse your tangram set to solve the area of the small triangle is 1 square the area of the whole square how you found the area of the whole =1 square inchCopyright Kendall Hunt Publishing Company1 TG Grade 3 Unit 11 Lesson 2 Teacher Guide - Page the area of the shape =1 square inchNameDateAssessment MasterTG Grade 3 Unit 11 Lesson 2 2 Copyright Kendall Hunt Publishing CompanyTeacher Guide - Page 2