What this lesson shows
Two triangles make a rectangle. Two squares make a rectangle. A square and a triangle make a house.
The worked example
The lesson works this one step by step: rectangle (question 1). Then your kid tries one like it on paper.
The steps
- Two triangles: a rectangle
- Two squares: a rectangle
- A square and a triangle: a house
- Shapes make new shapes
Helping at home
Read each box aloud. Your kid draws one straight line across the shape. Then cut paper shapes and put them back together to check.
If your kid gets stuck
Corner to corner makes triangles. Side to side makes rectangles.
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.B.6
Compose simple shapes to form larger shapes. For example, "Can you join these two triangles with full sides touching to make a rectangle?"
Matches standards in 45 statesSee each state's code
- Alabama MA19.K.23
- Alaska K.G.6
- Arizona K.G.B.6
- California K.G.B.6
- Colorado K.G.B.6
- Connecticut K.G.B.6
- Delaware K.G.B.6
- District of Columbia K.G.B.6
- Florida MA.K.GR.1.5
- Georgia K.GSR.8.4
- Hawaii K.G.B.6
- Idaho K.G.B.6
- Illinois K.G.B.6
- Iowa K.G.B.6
- Kansas K.G.6
- Kentucky KY.K.G.6
- Louisiana K.G.B.6
- Maine K.G.B.6
- Maryland K.GR.B.9
- Massachusetts K.G.B.6
- Michigan K.G.B.6
- Mississippi K.G.6
- Missouri K.GM.C.10
- Montana MT.K.G.6
- Nebraska K.G.1.e
- Nevada K.G.B.6
- New Hampshire K.G.B.6
- New Jersey K.G.B.6
- New Mexico K.G.B.6
- New York NY-K.G.6
- North Carolina NC.K.G.6
- North Dakota K.GM.G.4
- Ohio K.G.6
- Oklahoma K.GM.1.4
- Oregon K.GM.B.6
- Pennsylvania CC.2.3.K.A.2
- Rhode Island K.G.B.6
- South Dakota K.G.B.6
- Tennessee K.G.B.6
- Utah K.G.6
- Vermont K.G.B.6
- Washington K.G.B.6
- West Virginia M.K.25
- Wisconsin M.K.G.B.6
- Wyoming K.G.6