Name a Shape by Its Edges
Read the edge and corner description, then match it to a shape.
About 12 minutes, plus any extended practice
Open lesson 1Describe Flat Shapes and Solid Models
Identify shape attributes, distinguish flat and solid figures, and combine pieces.
Before you begin
- Notice straight and curved edges; use above and beside.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Separate Flat Figures from Solid Shapes
Read whether the question names a mathematical shape or its paper picture.
About 12 minutes, plus any extended practice
Open lesson 2Recognize a Solid from Its Parts
Match the supplied parts to a solid name.
About 12 minutes, plus any extended practice
Open lesson 3Combine Pieces Without Gaps or Overlap
Use the supplied description of a shape split into pieces.
About 15 minutes, plus any extended practice
Open lesson 4Review and transfer
After the lessons, try 4 new review cases and a practical task. Each answer has an explanation and a link back to the related lesson.
Open the unit reviewGuest answers are temporary. Keep your own paper or document; this unit does not certify completion or record a school grade.
Topic references
- Common Core State Standards, mathematics: K.G.A.2 — Identify shape attributes, distinguish flat and solid figures, and combine pieces.
- Common Core State Standards, mathematics: K.G.A.3 — Identify shape attributes, distinguish flat and solid figures, and combine pieces.
- Common Core State Standards, mathematics: K.G.B.4 — Identify shape attributes, distinguish flat and solid figures, and combine pieces.
- Common Core State Standards, mathematics: K.G.B.6 — Identify shape attributes, distinguish flat and solid figures, and combine pieces.
These references informed the topic selection. They do not certify complete standards alignment.