What does my child actually do on the 1st grade sheet?

Each of the eight problems shows a larger shape with a dotted space and the loose pieces that might fill it. Your child circles the one that fits with no gaps or overlaps, turning it if needed. An answer key comes with the sheet.

Is this the same task as the kindergarten one?

The task is the same: circle the piece that fills the dotted space. In 1st grade it is filed under 1.G.A.2, composing two-dimensional shapes to create a composite shape, so it sits beside the shape-naming work on the parent page as the next step rather than as review.

My child guesses fast and gets some wrong. What helps?

Slow the last step down. Have them run a finger around the dotted space, then around the piece they picked, and say whether every edge lines up. Guessing usually comes from matching one side only. Checking all sides catches most of the misses without you having to point out the error.

1st grade composing shapes

1st grade composing shapes worksheets

Composing shapes worksheets for 1st grade show eight larger shapes, each with a dotted space still to be filled, and ask your child to circle the piece that fits. Pieces may be turned, and the sheet says so. It is the step after naming shapes: two matching squares side by side make a rectangle, and a tilted piece is still the same piece.

Free printable PDF worksheet, aligned to Common Core 1.G.A.2.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of problems you'll get

Circle the piece that fills each dotted space. You may turn the pieces.

Join two matching squares along one full side.
Answer: They make a rectangle with no gaps or overlaps.

Most problems on this sheet sit beside a picture, model or diagram, so this is the worked example the sheet itself prints. The answer key on page two prints the answer under every problem.

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on each sheet

Composing shapes. Circle the piece that fills each dotted space. You may turn the pieces. 8 problems per page.

Every version prints on US Letter or A4, with its answer key after the problems.

This sheet is one of the versions on the 1st grade identifying 2d shapes page, with its own difficulty choices and its own answer key.

How to teach this

Start with the worked example at the top of the sheet and have your child explain why two squares joined along a full side make a rectangle and not a bigger square. That one conversation sets up all eight problems. Then work the sheet with the rule box in mind: no gaps or overlaps, and turning a piece does not change it. When a piece looks wrong at first, ask your child to rotate it in the air with a finger before ruling it out. First graders often pick the piece whose outline matches part of the space, so ask them to check every side of the dotted region. If the answer key disagrees with a circled piece, put a real cutout in the space. Seeing the gap settles it faster than an explanation.

Watch for: Kids reject a piece because it is drawn pointing the wrong way. A triangle turned on its side is still the same triangle, and the sheet says pieces may be turned, so ask them to spin it in the air before deciding. Kids circle a piece that covers most of the dotted space and call it close enough. Filling the space means no gap left over and nothing hanging past the edge, which is what the rule box asks for.

Common questions about 1st grade composing shapes

What does my child actually do on the 1st grade sheet?: Each of the eight problems shows a larger shape with a dotted space and the loose pieces that might fill it. Your child circles the one that fits with no gaps or overlaps, turning it if needed. An answer key comes with the sheet.
Is this the same task as the kindergarten one?: The task is the same: circle the piece that fills the dotted space. In 1st grade it is filed under 1.G.A.2, composing two-dimensional shapes to create a composite shape, so it sits beside the shape-naming work on the parent page as the next step rather than as review.
My child guesses fast and gets some wrong. What helps?: Slow the last step down. Have them run a finger around the dotted space, then around the piece they picked, and say whether every edge lines up. Guessing usually comes from matching one side only. Checking all sides catches most of the misses without you having to point out the error.

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Aligned to Common Core 1.G.A.2. Reviewed by the One more sheet team. Content version 241, updated September 2026.

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