What this lesson shows
A ruler zoomed in: halves and quarters between whole inches.
The worked example
The lesson works this one step by step: 4 3/4. Then your kid tries one like it on paper.
The steps
- Halves
- Quarters
- Count the quarter spaces
Helping at home
Line the ruler’s 0 up with the start of the line. Find the whole inch, then count quarter spaces past it: the middle mark is a half, the shorter marks are quarters.
If your kid gets stuck
Start at 0, not at the ruler’s edge.
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 3.MD.B.4
Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch. Show the data by making a line plot, where the horizontal scale is marked off in appropriate units— whole numbers, halves, or quarters.
Matches a standard in all 50 states and DCSee each state's code
- Alabama MA19.3.17
- Alaska 3.MD.3, 3.MD.5
- Arizona 3.MD.B.4
- Arkansas 3.GM.4, 3.GM.8, 3.DA.1, 4.DA.1
- California 3.MD.B.4
- Colorado 3.MD.B.4
- Connecticut 3.MD.B.4
- Delaware 3.MD.B.4
- District of Columbia 3.MD.B.4
- Florida MA.3.M.1.1, MA.3.DP.1.1
- Georgia 3.MDR.5.4, 3.MDR.5.5
- Hawaii 3.MD.B.4
- Idaho 3.MD.A.2, 3.MD.B.4
- Illinois 3.MD.B.4
- Indiana 4.DA.1, 3.M.1, 2.M.3, 4.M.1, 3.M.2, 3.DA.1, 2.DA.1
- Iowa 3.MD.B.4
- Kansas 3.MD.5, 3.MD.2
- Kentucky KY.3.MD.2.a, KY.3.MD.3.b, KY.3.MD.4.a, KY.3.MD.4.b, KY.3.MD.4.c, KY.3.MD.4.d
- Louisiana 3.MD.B.4
- Maine 3.MD.B.4
- Maryland 3.GR.A.1, 3.DS.A.1.a
- Massachusetts 3.MD.B.4
- Michigan 3.MD.B.4
- Minnesota 3.3.2.1, 3.3.3.4, 3.4.1.1
- Mississippi 3.MD.3, 3.MD.4
- Missouri 3.GM.B.7, 3.DS.A.1, 3.DS.A.3, 3.DS.A.4
- Montana MT.3.MD.4
- Nebraska 3.G.3.a, 3.G.3.b, 3.D.1.a, 3.D.1.b
- Nevada 3.MD.B.4
- New Hampshire 3.MD.B.4
- New Jersey 3.DL.A.1, 3.DL.A.2, 3.DL.B.4
- New Mexico 3.MD.B.4
- New York NY-3.MD.2.a, NY-3.MD.3, NY-3.MD.4
- North Carolina NC.3.MD.2.a, NC.3.MD.2.b, NC.3.MD.3.a, NC.3.MD.3.b, NC.4.MD.4.c
- North Dakota 3.GM.M.1, 3.DPS.D.1, 3.DPS.D.2
- Ohio 3.MD.4
- Oklahoma 3.GM.2.6, 3.GM.2.7, 3.D.1.1, 4.GM.2.4, 5.GM.3.2
- Oregon 3.GM.B.4, 3.DR.A.1
- Pennsylvania CC.2.4.3.A.1, CC.2.4.3.A.4
- Rhode Island 3.MD.B.4
- South Carolina 4.MGSR.2.3, 3.DPSR.1.1, 3.MGSR.2.4, 3.MGSR.2.5
- South Dakota 3.MD.B.4
- Tennessee 3.MD.A.2, 3.MD.B.3, 3.MD.B.4
- Texas 111.5.b.7.D, 111.5.b.7.E, 111.5.b.8.A
- Utah 3.MD.2, 3.MD.4
- Vermont 3.MD.B.4
- Virginia 2.MG.1a.iii, 2.MG.1b.iii, 2.PS.1c, 3.MG.1a, 3.MG.1b.i, 3.MG.1b.iii, 3.PS.1a, 3.PS.1b, 3.PS.1c, 3.PS.1d, 4.MG.1b.i
- Washington 3.MD.B.4
- West Virginia M.3.21
- Wisconsin M.3.MD.B.4
- Wyoming 3.MD.4