➕ 5th Grade Math · Unit 8

Classifying Shapes

6 short narrated lessons in 1 chapter, each with pictures, a quiz with a hint and a second try, and an explanation for every answer.

Standards: 5.G.B.3 5.G.B.4

Picture from the lesson “Sorting Triangles”
Sorting Triangles
Picture from the lesson “The Quadrilateral Family”
The Quadrilateral Family
Picture from the lesson “Shape Features Pass Down”
Shape Features Pass Down

What your child will learn

Two-dimensional figures

  1. Sorting TrianglesClassify triangles by their sides as equilateral, isosceles or scalene and by their angles.
  2. The Quadrilateral FamilyPlace quadrilaterals like trapezoids, parallelograms, rectangles, rhombuses and squares into a family diagram.
  3. Shape Features Pass DownExplain that every property of a category also belongs to its subcategories, like all rectangles having four right angles so all squares do too.
  4. Always, Sometimes or Never?Decide whether statements like a rhombus is a square are always, sometimes or never true.
  5. Two-Dimensional Figures: Review ReviewReview how two-dimensional figures are sorted into categories and subcategories.
  6. Unit 8 Test: Classifying ShapesShow what you learned in the whole unit (Two-dimensional figures) by answering mixed questions.

Try a question from this unit

From the lesson “Sorting Triangles”

A triangle has 3 equal sides. What kind of triangle is it?

  • Scalene
  • Equilateral
  • Obtuse
  • Right
Show the answer

Equilateral. A triangle with 3 equal sides is equilateral.

Hint kids see after a wrong try: “Which name means all sides are the same?”

Key words

  • equilateral
  • isosceles
  • scalene
  • quadrilateral
  • hierarchy
  • attribute
  • subcategory
  • always
  • sometimes
  • never

Try these lessons in Kids Shelf

Narrated lessons, pictures and quizzes for every grade from K to 8. Works offline.

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