What this lesson shows
Fixes a mistake
With gaps, 5 tiles cover a pencil. Packed tight, it takes 7.
The worked example
The lesson works this one step by step: 7. Then your kid tries one like it on paper.
The steps
- Gaps leave part unmeasured
- End to end
- Count the tiles
Helping at home
Lay the tiles end to end, each one touching the last, with no gaps and no overlaps. Then count them.
If your kid gets stuck
No gaps, no overlaps.
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.MD.A.1
Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.2.17, MA19.2.19, MA19.2.20
- Alaska 2.MD.1, 2.MD.3, 2.MD.4
- Arizona 2.MD.A.1
- Arkansas 2.GM.3
- California 2.MD.A.1
- Colorado 2.MD.A.1
- Connecticut 2.MD.A.1
- Delaware 2.MD.A.1
- District of Columbia 2.MD.A.1
- Florida MA.2.M.1.1, MA.2.M.1.2
- Georgia 2.MDR.5.1, 2.MDR.5.2
- Hawaii 2.MD.A.1
- Idaho 2.MD.A.1
- Illinois 2.MD.A.1
- Indiana 2.M.2
- Iowa 2.MD.A.1
- Kansas 2.MD.1, 2.MD.4
- Kentucky KY.2.MD.1
- Louisiana 2.MD.A.1
- Maine 2.MD.A.1
- Maryland 2.GR.A.1
- Massachusetts 2.MD.A.1
- Michigan 2.MD.A.1
- Minnesota 2.3.2.2
- Mississippi 2.MD.1
- Missouri 2.GM.B.4, 2.GM.B.7
- Montana MT.2.MD.1, MT.2.MD.3
- Nebraska 2.G.2.b, 2.G.3.a, 2.G.3.b
- Nevada 2.MD.A.1
- New Hampshire 2.MD.A.1
- New Jersey 2.M.A.1
- New Mexico 2.MD.A.1
- New York NY-2.MD.1
- North Carolina NC.2.MD.1, NC.2.MD.3, NC.3.MD.2.a
- North Dakota 2.GM.M.2
- Ohio 2.MD.1
- Oklahoma 2.GM.2.2, 3.GM.2.5, 3.GM.2.6, 5.GM.3.5
- Oregon 2.GM.B.4, 2.GM.B.7
- Pennsylvania CC.2.4.2.A.1
- Rhode Island 2.MD.A.1
- South Carolina 2.MGSR.1.1, 3.MGSR.2.4
- South Dakota 2.MD.A.1
- Tennessee 2.MD.A.1, 2.MD.A.3, 2.MD.A.4
- Texas 111.4.b.9.A, 111.4.b.9.D
- Utah 2.MD.1, 2.MD.4
- Vermont 2.MD.A.1
- Virginia 2.MG.1a.i, 2.MG.1b.i, 3.MG.1b.i
- Washington 2.MD.A.1
- West Virginia M.2.15
- Wisconsin M.2.MD.A.1
- Wyoming 2.MD.1