1. Two Dimensional Shapes Unit of Study 10: Geometry and Fractions Global Concept Guide: 2 of 3

2. Content Development  Focus should be on the attributes that make up the shape with a focus on precise vocabulary.  When introducing angles to students, discuss the importance of angles in building things for example the angle of a stair makes it flat so we can stand on it.  Exposing students to how shapes can be composed and decomposed will lay the foundation for fractions.  For more information on plane shapes, click hereclick here

3. Content Development ..

4. Day 1  Essential Question: How can you name a shape based on its number of sides and vertices?  Possible Engage:  Provide students anglegs (or other line segments-toothpicks, straws, pretzel sticks, etc.).  Instruct students to use anglegs to create a three-sided shape.  Discuss the attributes of the shape (three line segments, 3 vertices).  Instruct students to create a four-sided shape. Allot ample time for discussion as students could make a variety of quadrilaterals (rectangles, squares, trapezoids, etc.) Based on the standards, students are NOT required to classify quadrilaterals.  Students should continue to make shapes with their anglegs including five-sided shapes (pentagon) and six-sided shapes (hexagon).  As students create the shapes focus on the attributes of sides and angles.  Shape Up (pg. 125 and 127) can be used on Day 1 to help students solidify their understanding of identifying shapes based on sides and vertices. Shape Up  Elements of Go Math lesson 11.3 may be used on this day to help students make the connection between sides and vertices identifying specific shapes.

5. Day 1 continued  Additional Options: Create riddles and have students create shape with anglegs or on geoboard.  Mega Math- Identify Plane Shapes Mega Math  By the end of Day 1, students will be able to name 2-dimensional shapes based on the attributes of sides and vertices.

6. Day 2  Essential Question: How do you find and count angles in two dimensional shapes?  Possible engage:  Provide students anglegs (or other line segments-toothpicks, straws, pretzel sticks, etc.) Anglegs would be ideal for this engage.  Have students create a shape with 3 sides. Identify the vertex and angle within the shape. Facilitate discussion as to how many angles the shape has.  Repeat the task so that students create 4-sided, 5-sided and 6-sided shapes.  Go Math lesson 11.4 may be used on this day to help students find and count angles in a shape.  Geo boards would be great to use on this day to help students count angles on the board.  Pattern blocks can also be given to students to help them count angles.  The focus of today is angles; however, you may still want to ask students to identify the number of sides and vertices for each shape.  By the end of Day 2, students will be identify shapes based on the number of angles. vertex angle

7. Day 3  Essential Question: How can you use the number of sides and angles to sort two-dimensional shapes?  The focus of today is to sort shapes into categories based on attributes such as sides and angles.  Provide each group of students a set of pattern blocks. Have students' sort the pattern blocks into categories based on attributes.  Facilitate a discussion about why students chose to sort their pattern blocks into the categories they chose.

8. Day 3 Farm FencesFarm Fences can be used on this day. Students have to create shapes based on specific criteria.  Mega Math- Sort Plane Shapes Mega Math-  Elements of Go Math lesson 11.5 may also be used to supplement instruction on this day.  By the end of Day 3, students will be able to sort shapes based on sides and angles.

9. Day 4  Essential Question: What are different ways to sort polygons?  Provide students with Polygon sort cards. Have students sort shapes based on attributes. The students need to identify the rule for the way that they sorted their shapes. Facilitate discussions about the ways students sorted their polygons.Polygon sort cards  The Shape Riddles lesson could be used on this day. The activity has students create polygons from riddles.Shape Riddles lesson  It’s All About the Shapes –Cpalms lesson using The Greedy Triangle, geoboards, concentration game and a Venn diagram can be used on Day 4. It’s All About the Shapes  By the end of Day 4, students will be able to use attributes of polygons to sort shapes.

10. Enrich/Reteach/Intervention Reteach:  RtI Tier 2 TE p. 521B  RtI Tier 2 Tier 2 TE p. 525B  Reteach p. R101  Reteach p. R102  Reteach p. R103  Animated Model- Identify Plane Figures Animated Model  Animated Model- Sort Plane Figures Animated Model Enrich:  Enrich Activity on TE p. 517B, 521B, 525B  What’s my Shape Task: Use the Polygon sort cards. Assign one student in the group/pair to be the leader. Give the leader a “secret card”. The other player(s) ask yes or no questions to the leader to determine the secret shape on the secret card.Polygon sort cards

11. Literature for your Classroom Library