What this lesson shows
Fixes a mistake
A long, thin triangle still has 3 sides. A lopsided hexagon still has 6.
The worked example
The lesson works this one step by step: triangle (question 1). Then your kid tries one like it on paper.
The steps
- Not by its looks
- Count the sides
- 3 is a triangle, 6 a hexagon
Helping at home
Count the sides, touching each one as you go. The count names the shape, however long, thin, or lopsided it looks.
If your kid gets stuck
Count the sides.
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 2.G.A.1
Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.
Matches standards in 50 statesSee each state's code
- Alabama MA19.2.25a
- Alaska 2.G.1
- Arizona 2.G.A.1
- Arkansas 2.GM.1
- California 2.G.A.1
- Colorado 2.G.A.1
- Connecticut 2.G.A.1
- Delaware 2.G.A.1
- District of Columbia 2.G.A.1
- Florida MA.2.GR.1.1, MA.2.GR.1.2
- Georgia 2.GSR.7.1
- Hawaii 2.G.A.1
- Idaho 2.G.A.1
- Illinois 2.G.A.1
- Indiana 2.G.1
- Iowa 2.G.A.1
- Kansas 2.G.1
- Kentucky KY.2.G.1, KY.3.G.1.a
- Louisiana 2.G.A.1
- Maine 2.G.A.1
- Maryland 2.GR.B.5
- Massachusetts 2.G.A.1
- Michigan 2.G.A.1
- Minnesota 2.3.1.1, 2.3.1.2, 3.3.1.2
- Mississippi 2.G.1
- Missouri 2.GM.A.1.a, 2.GM.A.1.b
- Montana MT.2.G.1
- Nebraska 2.G.1.b
- Nevada 2.G.A.1
- New Hampshire 2.G.A.1
- New Jersey 2.G.A.1
- New Mexico 2.G.A.1
- New York NY-2.G.1, NY-3.G.1
- North Carolina NC.2.G.1
- North Dakota 1.GM.G.1, 2.GM.G.1, 2.GM.G.3
- Ohio 2.G.1, 3.G.1
- Oklahoma 2.GM.1.1, 2.GM.1.2, 2.GM.1.4, 3.GM.1.1
- Oregon 2.GM.A.1
- Pennsylvania CC.2.3.2.A.1
- Rhode Island 2.G.A.1
- South Carolina 2.MGSR.2.3, 2.MGSR.2.2
- South Dakota 2.G.A.1
- Tennessee 2.G.A.1, 3.G.A.3
- Texas 111.4.b.8.A, 111.4.b.8.B, 111.4.b.8.C
- Utah 2.G.1
- Vermont 2.G.A.1
- Virginia 2.MG.4a, 2.MG.4b, 2.MG.4c, 2.MG.4d, 3.MG.4a, 3.MG.4b, 3.MG.4c, 3.MG.4d, 3.MG.4e, 4.MG.6b
- Washington 2.G.A.1
- West Virginia M.2.25
- Wisconsin M.2.G.A.1