Overview and Background

geometry

Introduction to basic shapes - sides, angles, similarities and differences.

Lesson Plan and Activity

Tremendous Tangram

Project Info
Title: Tremendous Tangram
Author: H.Kimball
Link: https://
Subject: Math / Language Arts
Grade Level: 2-3
Difficulty: Beginner
Skills Needed: Basic Tinkercad
Duration: 1-2 class periods
Groups: 2-3 students/ group
Print time:
Filament:
Materials: Grandfather Tang’s Story by Ann Tompert
Construction paper – 1 per student
Ruler / compass
Pencil / paper
Software: tinkercad
Printer: Makerbot Replicator Mini+
Standards:
CCSS.MATH.content.2.G.A.1: Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons and cubes.
CCSS.ELA-LITERACY.RL.2.1: Ask and answer such questions as who, what, where, when, why and how to demonstrate understanding of key details in a text.
Ccss.ELA-LITERACY.RL.2.2: Recount stories, including fables and folktales from diverse cultures and determine their central message, lesson or moral.
Objective:
Students will review basic geometric shapes.
Students will learn about composite shapes and create new shapes
Students will compare and contrast similarities and differences in the tangrams
Students will recount story and demonstrate understanding of the content.
Students will interact and create with technology.

Teacher Preparation:
Make 20mm square for each student. (Differentiation: predraw lines on the square.)
Create a tangram paper chart that students will follow
Pre-read: Grandfather Tang’s Story by Ann Tompert
Make personal Tangram out of paper and 3D print

Read aloud Grandfather Tang’s Story
Explain that a tangram is an ancient Chinese puzzle. Creative questioning about the story.
Show the students examples of tangrams. Questioning about the different shapes; identify and count the sides. (close listening skills)
Creating paper tangram: sequencing and verbal vocabulary of polygons
a. Each student receives a 20mm square and a chart
b. Talk students through how to cut and fold the square to make tangram puzzle
i. square - 90® at each corner
ii. triangle
right triangle - 90®
congruent triangle – same size
iii. parallelogram – 2 triangles attached to a square (see if they can figure this out)
c. Walk around the class and observe if anyone needs help.
d. Students work at their own pace: when paper tangram is complete worksheet let them work on creating polygons: square, triangle, rectangle using 1-2-3-4 shapes. Assess as they draw their findings on a paper – sides, corners, shape. What are similar shapes? What are different shapes? Why?
e. Have them measure each piece of their tangram (in millimeters) and add to their shape to be used in 3D print design
Review the shapes, dimensions and measurements of each tangram shape
3D print: Beginner – Tinkercad
a. Talk students through their first tangram piece and then let them see what they can do.
b. Make sure they name each shape on their cutout for printing purposes.
c. Use smartboard assess to confirm student progress with shapes
d. Walk around the class, observe and help where necessary
Assessment: Reread the story and have students compare the story and what they did with their tangrams.
Turn in polygon (4d) findings to determine student knowledge and what may need to be retaught.

Extra: download a variety of tangram puzzles that students may explore on their own.

Materials Needed

Materials Needed

filament, paper, pencil, ruler, Grandfather Tang's Story, ruler, scissors, tinkercad

Duration of Lesson

1 class period, 2 technology class periods (1 hour each)

Preparation

Getting Ready

20mm square for each student.

tangram chart for each student.

Large Chart for visual assess.

premade 3D print tangram

Heather Kimball