# Fact Family Center Activity - Common Core K, 1, 2

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This Fact Family Activity is great for students in Kindergarten, 1st, and 2nd grade. The following common core math standards are addressed:

K.OA.1 Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

K.OA.5 Fluently add and subtract within 5.

1.OA.3 Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

1.OA.4 Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8. Add and subtract within 20.

1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.

2.OA.2 Fluently add and subtract within 20 using mental strategies.2 By end of
Grade 2, know from memory all sums of two one-digit numbers.

2.NBT.9 Explain why addition and subtraction strategies work, using place value and the properties of operations.

The “Fact Family House” and cards can be used as a great center activity or a whole-class activity depending on how many students are in your class. There are 20 fact families you can create when “adding and subtracting within 10,” and this activity includes them all. This activity is great because it helps students remember that fact families can include only 3 numbers. Also, it helps students see the connections between addition and subtraction.

To set up the activity, I first print 20 houses on white cardstock and laminate those pages. Then I put a “Velcro coin back” on each of the empty boxes (optional). Next, I print the number cards on any color card stock, laminate the pages, cut out the cards, and stick a “Velcro coin front” on each. I put each “family” of cards in a labeled, snack-sized Zip-lock bag so they do not get mixed up.

Variation 1: You can skip the Velcro & just have students place cards on the correct spots.

Variation 2: You can skip the Velcro & laminating and turn this activity into a cut & paste activity.

You can set up the activity any way you like. Here are 3 ideas:

• Center: 3-hole punch the 20 house pages & put them all in a binder. You can use the cute cover on the next page as a cover for the binder. Then, paper clip one Zip-lock bag filled with cards to each page. Students can complete the entire book as part of a center.

• Center or Whole Class: Put one house page & one set of fact family cards in a separate gallon-sized Zip-lock bag. You will need 20 gallon-sized bags.

• Individual Activity or Homework: Just make regular paper copies of the house & cards. Give each student 1 house and 1 set of cards; students can cut out the cards & glue them onto their houses.
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13 pages
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