KnowledgeMadeFun, home

Lesson · Kindergarten · Mathematics

Sorting Shapes by One Thing: Corners, and Does It Roll?

  • Kindergarten
  • Mathematics
  • 1 min
  • British Columbia
  • BCK-MA-16

Flat shapes are sorted by looking only at corners: shapes where straight sides meet go in one group, and shapes that curve all the way round go in the other. Then solid things are sorted by asking only "does it roll?": the ball and the can roll, and the box and the block don't.

Concept: Flat shapes and solid shapes: sorting by one feature

Anyone can watch two lessons on the website without an account. Signing in is free, no payment and no card, and opens three a day; Plus has no limit.

Loading

Share to Google Classroom

In one sentence

The question this lesson answers

Let's sort these flat shapes into two groups.

We look at just one thing: corners.

Transcript

What the lesson says

Let's sort these flat shapes into two groups.

We look at just one thing: corners.

A corner is where two straight sides meet.

Two groups: corners, and no corners.

This one has corners, so it goes here.

This one curves all the way round. No corners.

Each shape goes in the group it matches.

Let's check: these have corners, these have none.

Solid shapes can be sorted too.

Now we ask just one thing: does it roll?

The ball rolls, and the can rolls on its side.

The box and the block don't roll.

To sort, look at just one thing.

Curriculum

Where this fits

British Columbia, Kindergarten

Mathematics, Geometry and measurement: single attributes of 2D shapes and 3D objectsBCK-MA-16

Previous: Holds More or Holds Less? Pour to CheckNext: Position Words: On Top Of, Under, Beside, In Front Of

The outcomes and strands follow the British Columbia curriculum.

Keep going

More on this topic