What this lesson shows
Count by 2s to 20. Even numbers end in 0, 2, 4, 6, or 8. 15 ends in 5, so it is odd.
The worked example
The lesson works this one step by step: 15. Then your kid tries one like it on paper.
The steps
- Count by 2s
- Even ends in 0, 2, 4, 6, 8
- Look at the last digit
Helping at home
Count by 2s to see the even numbers: they end in 0, 2, 4, 6, or 8. Look at the last digit. If it is one of those, the number is even; if not, it is odd.
If your kid gets stuck
What does it end in?
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 2.OA.C.3
Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.
Matches standards in 49 statesSee each state's code
- Alabama MA19.2.3a
- Alaska 2.OA.3
- Arizona 2.OA.C.3
- Arkansas 2.CAR.8
- California 2.OA.C.3
- Colorado 2.OA.C.3
- Connecticut 2.OA.C.3
- Delaware 2.OA.C.3
- District of Columbia 2.OA.C.3
- Florida MA.2.AR.3.1
- Georgia 2.NR.3.1
- Hawaii 2.OA.C.3
- Idaho 2.OA.C.3
- Illinois 2.OA.C.3
- Indiana 2.NS.3
- Iowa 2.OA.C.3
- Kansas 2.OA.3
- Kentucky KY.2.OA.3
- Louisiana 2.OA.C.3
- Maine 2.OA.C.3
- Maryland 2.AT.B.3
- Massachusetts 2.OA.C.3
- Michigan 2.OA.C.3
- Mississippi 2.OA.3
- Missouri 2.RA.B.2.b, 2.RA.B.2.c
- Montana MT.2.OA.3
- Nebraska 2.N.5.d
- Nevada 2.OA.C.3
- New Hampshire 2.OA.C.3
- New Jersey 2.OA.C.3
- New Mexico 2.OA.C.3
- New York NY-2.OA.3.a, NY-2.OA.3.b
- North Carolina NC.2.OA.3.a, NC.2.OA.3.b, NC.2.OA.3.c
- North Dakota 2.AR.OA.6
- Ohio 2.OA.3
- Oklahoma 1.N.3.2, 2.N.1.5
- Oregon 2.OA.C.3
- Pennsylvania CC.2.2.2.A.3
- Rhode Island 2.OA.C.3
- South Carolina 2.PAFR.1.8
- South Dakota 2.OA.C.3
- Tennessee 2.OA.C.3
- Texas 111.4.b.7.A
- Utah 2.OA.3
- Vermont 2.OA.C.3
- Virginia 2.NS.1a, 2.NS.1h, 2.NS.1i, 2.NS.1j
- Washington 2.OA.C.3
- West Virginia M.2.4
- Wisconsin M.2.OA.C.3