This challenging problem and brainteaser gives first graders an opportunity to compose and decompose squares.

Students make a square on a geoboard, draw the square on geoboard paper, and cut it out. Then students make a square that is bigger or smaller than their first square, draw it on geoboard paper, and cut it out. Students continue to see how many different sized squares they can make and draw. Lastly, students paste all of their different sized squares onto a sheet of paper in order from smallest to largest.

This instructional task gives students a hands-on experience with composing and decomposing geometric figures.

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After reading the story, The Silly Story of Goldilocks and the Three Squares, students identify and describe shapes in a variety of orientations.

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This resource is from Tools4NCTeachers.Students need distributed practice of newly-learned skills to develop fluency, build proficiency, and deepen understanding. This file contains directions for activities which may be used as Cluster 6 games or math stations.

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This lesson engages students in recognizing and identifying the properties of plane geometric figures. Students should learn that the properties of a shape to determine its name.

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This is lesson 6 of 6 lessons focused around developing a mathematical community at the beginning of the school year. While this lesson uses puzzle exploration to informally review the names of shapes, its main goal is to recognize that students must persevere when problem solving.

This resource is from Tools4NCTeachers.  This is a set of four tasks, which may be used for instruction or assessment.  Each file contains a separate task, rubric, and recording sheets.  Students are asks to parittion shapes into equal parts, with a focus on halves and fourths.Remix this resource to include extension ideas or addtional tasks.

This resource is from Tools4NCTeachers. This file contains a set of 4 tasks (including scoring rubric, recording sheet, printable materials, and student work samples).  The tasks may be used for instruction or assessment. The focus of standard G.3 is on partitioning circles and rectangles into 2, 3, and 4 equal shares.  Most of this resource focuses on partitioning rectangles.  Please remix this resource to add additional circle tasks. Sharing is caring!

This resource is from Tools4NCTeachers. In this lesson, students explore partitioning shapes into halves and fourths.  The lesson could be taught consecutively in one math block or extended over multiple days depending on students’ understanding of the concept of halves and fourths.

This resource is from Tools4NCTeachers.  In this lesson, students create polygons on geoboards and record the polygons on geodot paper.  They write riddles about the polygons and have classmates guess their shape.  Printable Geodot paper and student work pages are included within this lesson.  Remix this lesson to include related math centers and pictures of student work.

This resource is from Tools4NCTeachers.  In this lesson students will sort polygons, paying attention to their attributes.  They will use geometric vocabulary and identify their sorting rules. Sorting cards, activity sheets, and sample student solutions are included within this lesson.

This resource is from Tools4NCTeachers.  In this lesson, students will determine ways to partition a sandwich into two equal parts and determine if the halves are the same size.  Then students will work with partners to determine different ways to partition a sandwich into fourths and prove that the fourths are equal shares. Sample student work and recording sheets are provided within this lesson.Remix this lesson to share extension activities and related math centers.

This task aims at explaining why four regular octagons can be placed around a central square, applying student knowledge of triangles and sums of angles in both triangles and more general polygons.