What this lesson shows
Triangle, square, rectangle, hexagon, circle, and semicircle by sides, vertices, and straight or curved edges.
The worked example
The lesson works this one step by step: hexagon (question 1). Then your kid tries one like it on paper.
The steps
- Count the sides
- Count the vertices
- Straight or curved
Helping at home
Count the sides and the vertices, the corners where two sides meet. Run a finger along each side to check if it is straight or curved.
If your kid gets stuck
Count the sides, then 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 1.G.A.1
Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.1.21a
- Alaska 1.G.1
- Arizona 1.G.A.1
- Arkansas 1.GM.1, 2.GM.2
- California 1.G.A.1
- Colorado 1.G.A.1
- Connecticut 1.G.A.1
- Delaware 1.G.A.1
- District of Columbia 1.G.A.1
- Florida MA.1.GR.1.1, MA.1.GR.1.2
- Georgia 1.GSR.4.1
- Hawaii 1.G.A.1
- Idaho 1.G.A.1
- Illinois 1.G.A.1
- Indiana 2.G.1, 1.G.1
- Iowa 1.G.A.1
- Kansas 1.G.1
- Kentucky KY.1.G.1
- Louisiana 1.G.A.1
- Maine 1.G.A.1
- Maryland 1.GR.B.3
- Massachusetts 1.G.A.1
- Michigan 1.G.A.1
- Minnesota 1.3.1.1
- Mississippi 1.G.1
- Missouri 1.GM.A.1, 1.GM.A.3
- Montana MT.1.G.1, MT.1.G.2
- Nebraska 1.G.1.a, 1.G.1.b, 2.G.1.a
- Nevada 1.G.A.1
- New Hampshire 1.G.A.1
- New Jersey 1.G.A.1
- New Mexico 1.G.A.1
- New York NY-1.G.1
- North Carolina NC.1.G.1.a, NC.1.G.1.b
- North Dakota 1.GM.G.1, 1.GM.G.2, 1.GM.G.3
- Ohio 1.G.1
- Oklahoma 1.GM.1.1, 1.GM.1.4, 3.GM.1.1
- Oregon 1.GM.A.1
- Pennsylvania CC.2.3.1.A.1
- Rhode Island 1.G.A.1
- South Carolina 1.MGSR.2.4, 1.MGSR.2.1, 1.MGSR.2.5, 1.MGSR.2.2
- South Dakota 1.G.A.1, 1.G.A.2
- Tennessee 1.G.A.1
- Texas 111.3.b.6.A, 111.3.b.6.B, 111.3.b.6.C, 111.3.b.6.D, 111.3.b.6.E, 111.4.b.8.B, 111.5.b.6.A
- Utah 1.G.1
- Vermont 1.G.A.1
- Virginia 1.MG.2a, 1.MG.2b, 1.MG.2c, 1.MG.2d, 2.MG.4a, 2.MG.4d, 4.MG.6a
- Washington 1.G.A.1
- West Virginia M.1.20
- Wisconsin M.1.G.A.1
- Wyoming 1.G.1