Mental math skills are integral to our daily lives and as such we should be teaching them to our students. Knowing their doubles facts is a key component in being able to use a variety of mental math strategies such as doubles plus or minus one, two, or three. If you have never used the doubles strategy before and aren’t sure of how it can help students, consider this: “I know that 10 + 12 = 22, because I know that 10 + 10 = 20 so I just add on 2 more”. Before children can learn the doubles mental math strategies, however, they need to master their doubles facts. Read on for some fun activities for teaching the doubles facts and mental math strategies.
Once the topic has been thoroughly introduced I like to reinforce the doubles facts by playing a couple of games.
I have this set up so the students play in partners. Each one has a game board and then they select a number from the pile. They need to double the number they chose and then they can cover up that number on their board. Once the pile runs out they can shuffle and start picking again until someone’s whole board is covered.
Throughout the week (and the rest of the year at random) I will also do on the fly quizzes where I call out a doubles fact at random and students put up their hand to answer. I often do this when we are lining up to go somewhere which serves a dual purpose, 1) It reinforces the doubles facts and 2) it gets them focussed in line.
Once I feel they have mastered their doubles facts I have them complete this booklet so they can take it home and practice there.
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