What this lesson shows
Towers of 3, 5, 7, and 9 cubes leveled out to 6 each. Then add and divide.
The worked example
The lesson works this one step by step: Cubes in each tower: 3, 5, 7, 9. Then your kid tries one like it on paper.
The steps
- Level them out
- Every tower the same
- Add, then divide
Helping at home
The mean is the fair share: move cubes from the tall towers to the short ones until every tower is the same. To check, add all the cubes and divide by the number of towers.
If your kid gets stuck
Level them out, then add and divide.
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 5.MD.B.2
Make a line plot to display a data set of measurements in fractions of a unit (1/2, 1/4, 1/8). Use operations on fractions for this grade to solve problems involving information presented in line plots. For example, given different measurements of liquid in identical beakers, find the amount of liquid each beaker would contain if the total amount in all the beakers were redistributed equally.
Matches standards in 50 statesSee each state's code
- Alabama MA19.5.16a
- Alaska 5.MD.3, 5.MD.4
- Arizona 5.MD.B.2 *
- Arkansas 5.DA.1, 5.DA.2
- California 5.MD.B.2
- Colorado 5.MD.B.2
- Connecticut 5.MD.B.2
- Delaware 5.MD.B.2
- District of Columbia 5.MD.B.2
- Florida MA.5.DP.1.1, MA.5.DP.1.2
- Georgia 5.MDR.7.2
- Hawaii 5.MD.B.2
- Idaho 5.MD.B.2.a, 5.MD.B.2.b
- Illinois 5.MD.B.2
- Indiana 5.DA.1, 5.DA.2
- Iowa 5.MD.B.2
- Kansas 5.MD.2
- Kentucky KY.5.MD.2
- Louisiana 5.MD.B.2
- Maine 5.MD.B.2
- Maryland 5.DS.A.1.a, 5.DS.A.1.b
- Massachusetts 5.MD.B.2
- Michigan 5.MD.B.2
- Minnesota 5.4.1.2, 5.4.1.1
- Mississippi 5.MD.2
- Missouri 5.DS.A.1, 5.DS.A.2
- Montana MT.5.MD.2, 5.D1.5
- Nebraska 5.D.2.a
- Nevada 5.MD.B.2
- New Hampshire 5.MD.B.2
- New Jersey 5.DL.A.1, 5.DL.A.2, 5.DL.A.4, 5.DL.B.5
- New Mexico 5.MD.B.2
- New York NY-5.MD.2
- North Carolina NC.5.MD.2.a, NC.5.MD.2.b, NC.5.MD.2.c
- North Dakota 5.DPS.D.1, 5.DPS.D.2
- Ohio 5.MD.2
- Oklahoma 5.D.1.2, 5.D.1.1
- Oregon 5.DR.A.1, 5.DR.B.2
- Pennsylvania CC.2.4.5.A.2, CC.2.4.5.A.4
- Rhode Island 5.MD.B.2
- South Carolina 5.DPSR.1.2, 5.DPSR.1.1, 5.DPSR.1.3
- South Dakota 5.MD.B.2.a, 5.MD.B.2.b
- Tennessee 5.MD.B.2
- Texas 111.7.b.9.A, 111.7.b.9.C
- Utah 5.MD.2
- Vermont 5.MD.B.2
- Virginia 4.PS.1c, 4.PS.1d.i, 4.PS.1d.ii, 4.PS.1d.iii, 4.PS.1d.iv, 4.PS.1d.v, 5.PS.1a, 5.PS.1b, 5.PS.1c, 5.PS.1e.v, 5.PS.1e.i, 5.PS.1e.ii, 5.PS.1e.iii, 5.PS.1e.iv, 5.PS.2a, 5.PS.2b, 5.PS.2c, 5.PS.2d, 5.PS.2e
- Washington 5.MD.B.2
- West Virginia M.5.19
- Wisconsin M.5.MD.B.2