6th grade (Illustrative Mathematics)
Course Content
Unit 1: Area and surface area

Lesson 3: Reasoning to find area

Finding area by rearranging parts

Lesson 6: Area of parallelograms

Area of a parallelogram

Finding height of a parallelogram

Lesson 9: Formula for area of a triangle

Area of a triangle

Finding area of triangles

Triangle missing side example

Lesson 11: Polygons

Lesson 12: What is surface area?

Surface area of a box (cuboid)

Lesson 13: Polyhedra

Counting faces and edges of 3D shapes

Recognizing common 3D shapes

Intro to nets of polyhedra

Lesson 14: Nets and surface area

Surface area using a net: triangular prism

Lesson 15: More nets, more surface area

Surface area of a box using nets

Extra practice: Surface area

Surface area word problem example

Lesson 18: Surface area of a cube

Evaluating expressions with variables: cubes
Unit 2: Introducing ratios
Unit 3: Unit rates and percentages
Unit 4: Dividing fractions
Unit 5: Arithmetic in base ten
Unit 6: Expressions and equations
Unit 7: Rational numbers
Unit 8: Data sets and distribution
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