CCSS.Math.Content.K.G.B.6
The Standard
Compose simple shapes to form larger shapes.
Common Core State Standards for Mathematics · Geometry
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students fit two or more flat shapes together to build a new shape. They turn, slide, and flip pieces so edges meet without gaps or overlaps.
What Mastery Looks Like
- A student can select and arrange shape pieces to make a named larger shape. They can describe which pieces they used and show where the sides meet.
Common Misconceptions
- Students may leave gaps, overlap pieces, or touch only the corners. They may think turning or flipping a piece changes its shape. Some name the small pieces instead of the larger shape they made.
How to Assess It
- Give each student two paper triangles and ask, "Make a rectangle with full sides touching, then name the shape you made."
Lesson moves
Ways to Teach It
Give pairs pattern blocks and picture cards, then have them cover each picture completely without gaps or overlaps.
Show two different ways to combine triangles and ask, "What larger shape did each pair make, and how do you know?"
Play Shape Builder Bingo by calling out combinations, such as two triangles making a square, for students to build and cover.
Examine quilt or floor tile photos, then have students point out smaller shapes that combine to form larger shapes.
Free download
Printable K.G.B.6 Worksheet
A ready-to-print activity worksheet aligned to CCSS.Math.Content.K.G.B.6, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetBefore This Standard
If students are struggling here, check these first.
- CCSS.Math.Content.K.G.A.2
Recognizing shapes across sizes and orientations helps students choose and describe pieces when combining them into larger shapes.
- CCSS.Math.Content.K.G.B.5
Building and drawing individual shapes supports seeing shapes as parts that can be arranged to make larger shapes.
- CCSS.Math.Content.K.G.A.3
Distinguishing flat shapes from solids helps students choose and orient pieces when composing larger flat shapes.
What This Unlocks
Mastery here sets students up for these next.
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