Equal groups and arrays: 3rd grade math lesson

What this lesson shows

4 shelves of 6 books as groups, then as an array: 4 × 6 = 24.

The worked example

The lesson works this one step by step: 4 × 6. Then your kid tries one like it on paper.

The steps

Draw equal groups
Add the groups
Line them up as rows
Groups × how many in each

Helping at home

Draw a loop for each group, then the same number of dots in each. Add the groups, then line them up as rows. The first number counts the groups, the second how many in each.

If your kid gets stuck

Draw a loop for each group 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.

See how Lux works

Standards

Common Core 3.OA.A.1
Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.

Matches standards in 47 statesSee each state's code

Alabama MA19.3.1
Alaska 3.OA.1
Arizona 3.OA.A.1
California 3.OA.A.1
Colorado 3.OA.A.1
Connecticut 3.OA.A.1
Delaware 3.OA.A.1
District of Columbia 3.OA.A.1
Florida MA.3.NSO.2.2
Hawaii 3.OA.A.1
Idaho 3.OA.A.1
Illinois 3.OA.A.1
Indiana 3.CA.3
Iowa 3.OA.A.1
Kansas 3.OA.1
Kentucky KY.3.OA.1
Louisiana 3.OA.A.1
Maine 3.OA.A.1
Maryland 3.NOS.B.2
Massachusetts 3.OA.A.1
Michigan 3.OA.A.1
Minnesota 3.1.2.3, 3.2.2.1
Mississippi 3.OA.1
Missouri 3.RA.A.1, 3.RA.A.3
Montana MT.3.OA.1
Nebraska 3.A.1.f
Nevada 3.OA.A.1
New Hampshire 3.OA.A.1
New Jersey 3.OA.A.1
New Mexico 3.OA.A.1
New York NY-3.OA.1
North Carolina NC.3.OA.1.a
Ohio 3.OA.1
Oklahoma 3.N.2.1
Oregon 3.OA.A.1
Pennsylvania CC.2.2.3.A.1
Rhode Island 3.OA.A.1
South Carolina 3.PAFR.1.2
South Dakota 3.OA.A.1
Tennessee 3.OA.A.1
Texas 111.4.b.6.A, 111.5.b.4.D, 111.5.b.4.E
Utah 3.OA.1
Vermont 3.OA.A.1
Virginia 3.CE.2a
Washington 3.OA.A.1
West Virginia M.3.1
Wisconsin M.3.OA.A.1

Equal groups and arrays