What this lesson shows
Fixes a mistake
A 6-inch pencil is longer than a 10-centimeter crayon. The bigger number is not always longer.
The worked example
The lesson works this one step by step: 6 in and 10 cm. Then your kid tries one like it on paper.
The steps
- Look at the units
- Measure from 0
- An inch is bigger
Helping at home
Only compare numbers in the same unit. An inch is bigger than a centimeter, so put both on rulers from 0, or measure both in one unit.
If your kid gets stuck
Are they in the same unit?
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