What this lesson shows
Circle, triangle, rectangle, and square: count the sides and corners. A circle has neither.
The worked example
The lesson works this one step by step: square (question 1). Then your kid tries one like it on paper.
The steps
- Circle: round, no corners
- Triangle: 3 sides
- Rectangle: 4 sides, square corners
- Square: 4 sides the same
Helping at home
Read each box aloud. Your kid circles every one of that shape, big or small, turned or not. Ask "how many sides? how many corners?" for each.
If your kid gets stuck
Count the sides and the corners.
Watch it with Lux
With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.
Standards
- Common Core K.G.A.2
Correctly name shapes regardless of their orientations or overall size.
Matches standards in 49 statesSee each state's code
- Alabama MA19.K.19
- Alaska K.G.2
- Arizona K.G.A.2
- Arkansas K.GM.2
- California K.G.A.2
- Colorado K.G.A.2
- Connecticut K.G.A.2
- Delaware K.G.A.2
- District of Columbia K.G.A.2
- Florida MA.K.GR.1.1
- Hawaii K.G.A.2
- Idaho K.G.A.2
- Illinois K.G.A.2
- Iowa K.G.A.2
- Kansas K.G.2
- Kentucky KY.K.G.2
- Louisiana K.G.A.2
- Maine K.G.A.2
- Maryland K.GR.B.5
- Massachusetts K.G.A.2
- Michigan K.G.A.2
- Minnesota K.3.1.1, 2.3.1.2
- Mississippi K.G.2
- Missouri K.GM.C.6, 1.GM.A.3
- Montana MT.K.G.2
- Nebraska K.G.1.a, K.G.1.b
- Nevada K.G.A.2
- New Hampshire K.G.A.2
- New Jersey K.G.A.2
- New Mexico K.G.A.2
- New York NY-K.G.2
- North Carolina NC.K.G.2
- North Dakota K.GM.G.1, K.GM.G.2, 1.GM.G.2
- Ohio K.G.2
- Oklahoma K.GM.1.1, 1.GM.1.1, 1.GM.1.4
- Oregon K.GM.A.2
- Pennsylvania CC.2.3.K.A.1
- Rhode Island K.G.A.2
- South Carolina K.MGSR.2.1
- South Dakota K.G.A.2
- Tennessee K.G.A.2
- Texas 111.2.b.6.A, 111.2.b.6.B
- Utah K.G.2
- Vermont K.G.A.2
- Virginia K.MG.2a, K.MG.2d, 2.MG.4c
- Washington K.G.A.2
- West Virginia M.K.21
- Wisconsin M.K.G.A.2
- Wyoming K.G.2