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Mathematics Grade 1
Strand: GEOMETRY (1.G.) Standard 1.G.2
Mathematics Grade 1
Strand: GEOMETRY (1.G.) Standard 1.G.1
Students will learn how to combine shapes to make other shapes using Geoboards.
Students should already be able to recognize and create the four geometric shapes: circle, square, rectangle, and triangle. They are now ready to be taught how to combine shapes to make other shapes. (e.g., make a square from two triangles). Geoboards can be used to teach children how to compose and decompose plane figures.
1. Demonstrate a positive learning attitude.
Invitation to Learn
Begin by reading the book Try It With Triangles. Ask them to name the geometric shapes that they see in the story. Display the Shape Vocabulary Cards as the students name them from the book.
Hellwig, S. J., Monroe, E. E., & Jacobs, J. S., (November 2000) Making Informed Choices: Selecting Childrens Trade Books for Mathematics Instruction. Teaching Children Mathematics. Retrieved November 18, 2006 from www.questia.com.
Trade books allow students to interact with mathematics in context, helping them draw meaningful connections between experiences in the classroom and life outside the classroom. They can provide an appealing setting that shows how mathematics exists in our world. Trade books can also give students the opportunity to develop language skills as they develop mathematical skills.
Chapin, S. H., Johnson, A. (2000). Math Matters: Understanding the Math You Teach. p.145-146.
This research suggests that students first learn to identify shapes and figures only on the basis of appearance. They may not recognize properties of figures, and orientation affects how they view a figure. Classroom instruction in the early grades needs to include example of a variety of each type of shape shown in various orientations.