Maths Resource House mascot: a robot with a surfboardMaths Resource HouseGrade 4 · targets, lessons & assessments
Unit 2: Geometry
Target 104.G.A.2Ch 10: Target 2

I can classify two-dimensional figures based on their sides, lines, and angles.

Standard cap: 4 - Create and analyze figures that satisfy overlapping classification constraints.

Subskills what students must be able to do

  • 1I can classify shapes using parallel/perpendicular sides and angle types.
  • 2I can classify triangles by their angles and side lengths, including recognizing right triangles as their own category.
  • 3I can classify quadrilaterals into all groups they belong to.

Proficiency Scale & ⚓️ Tasks

1 → 4 proficiency scale
1Beginning

“Does this shape have parallel sides? Right angles?”

2Developing

“Classify this triangle as acute/right/obtuse and equilateral/isosceles/scalene.”

3Proficient

“Classify each polygon in every category it belongs to and use its attributes as evidence.”

4Advanced

“Create two different quadrilaterals that share at least two attributes but belong to different categories. Classify each in every category it belongs to and explain which attribute changes the classification.”

Pre-Test

Check what students already know2

Teach

Lessons and videos that introduce the skill7

Snorkl / Spiral Checks

Quick checks along the way1

Post-Test

End-of-target tests and extra materials1

GoMath / CP

Curriculum lessons and their exit tickets6