What this lesson shows
Three towers side by side, ends lined up, put in order.
The worked example
The lesson works this one step by step: 7, 4, 9. Then your kid tries one like it on paper.
The steps
- Line up the ends
- Find longest and shortest
- Put them in order
Helping at home
Line the ends up on one line first. Then the one that reaches farthest is longest, and the one that stops first is shortest.
If your kid gets stuck
Line up the ends first.
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.MD.A.1
Order three objects by length; compare the lengths of two objects indirectly by using a third object.
Matches standards in 48 statesSee each state's code
- Alabama MA19.1.17
- Alaska 1.MD.1
- Arizona 1.MD.A.1
- Arkansas 1.GM.4
- California 1.MD.A.1
- Colorado 1.MD.A.1
- Connecticut 1.MD.A.1
- Delaware 1.MD.A.1
- District of Columbia 1.MD.A.1
- Florida MA.1.M.1.2
- Georgia K.MDR.7.1, 1.MDR.6.1
- Hawaii 1.MD.A.1
- Idaho 1.MD.A.1
- Illinois 1.MD.A.1
- Indiana 1.M.1
- Iowa 1.MD.A.1
- Kansas 1.MD.1
- Kentucky KY.1.MD.1
- Louisiana 1.MD.A.1
- Maine 1.MD.A.1
- Maryland K.GR.A.3, 1.GR.A.1
- Massachusetts 1.MD.A.1
- Michigan 1.MD.A.1
- Minnesota K.3.2.2
- Mississippi 1.MD.1
- Missouri 1.GM.B.5, 1.GM.B.6
- Montana MT.1.MD.1
- Nebraska 1.G.2.b
- Nevada 1.MD.A.1
- New Hampshire 1.MD.A.1
- New Jersey 1.M.A.1
- New Mexico 1.MD.A.1
- New York NY-1.MD.1
- North Carolina NC.1.MD.1
- North Dakota 1.GM.M.2
- Ohio 1.MD.1
- Oklahoma K.GM.2.2
- Oregon 1.GM.B.4
- Pennsylvania CC.2.4.1.A.1
- Rhode Island 1.MD.A.1
- South Carolina 1.MGSR.1.1
- South Dakota 1.MD.A.1
- Tennessee 1.MD.A.1
- Utah 1.MD.1
- Vermont 1.MD.A.1
- Washington 1.MD.A.1
- West Virginia M.1.15
- Wisconsin M.1.MD.A.1