2D 3D Flat Shapes Solid Figures Activity
Children sort shape cards into flat shapes and solid figures in this 2d 3d flat shapes solid figures activity for kindergarten to 2nd grade, with a practice page and answer key included.
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About this resource
Description
How to Teach Flat Shapes and Solid Figures
This 2d 3d flat shapes solid figures activity helps kindergarten, 1st and 2nd grade students tell the difference between flat shapes and solid figures. A flat shape, or 2D shape, has length and width, like a circle drawn on paper. A solid figure, or 3D shape, also has depth, like a ball or a block you can hold. Sorting real examples is the quickest way for young learners to see the difference.
Using the Activity
The pack has ten bright shape cards: a circle, square, triangle, rectangle and hexagon, plus a cube, sphere, cone, cylinder and pyramid. Each card shows the shape and its name. Children say the name, decide if the shape is flat or solid, and place the card in the Flat Shape or Solid Figure box on the sort mat. Use this 2d 3d flat shapes solid figures activity in a math center, a small group, or a whole-class sort on the board.
What’s Included
- Colorful cover page
- How to Use page with directions, materials, and setup
- 10 shape cards (5 flat shapes and 5 solid figures)
- Flat Shape and Solid Figure sort mat
- Kindergarten practice worksheet: circle the solid figure
- Answer keys for the sort and the practice worksheet
3 Reasons This Activity Helps Kids
First, the solid figures are drawn with depth and dashed hidden edges, so children learn what makes a shape 3D. Second, naming each shape as they sort builds geometry vocabulary. Third, sorting by an attribute is a key early math skill that carries over to data and graphing.
Ideas for Teachers and Parents
Bring in real objects such as a ball, a can and a box, and have children match each one to a shape card. Ask students to trace the flat face of a block to show that solid figures have flat shapes on them. At home, go on a shape hunt in the kitchen. This kindergarten geometry activity is also a helpful review for 2nd grade students.
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