We have been working hard on many important math standards this quarter under the domain of "Operations and Algebraic Thinking." We have been exploring the properties of addition. The students are able to make fact families when given three related numbers (2+3=5, 3+2=5, 5-2=3, 5-3=2). With the understanding of addition properties, we are able to meet some other standards as well. For example, students have to be able determine the unknown number in an addition or subtraction sentence relating to three whole numbers. In the partner game below, the first graders are working with their third grade buddies to find the missing number in each equations. They have to figure out where the number tiles go in the different equations. The first player to fill up their side of the game board wins.
We have also been working hard at understanding that the = sign means "the same as" in equations. We compared the equal sign to a balance and determined if certain equations were true or false. Finally, this quarter, we have spent time daily developing fact fluency and strategies for addition and subtraction. Such an important math foundational skill.
There are so many fun ways to practice developing fact fluency. Here are some awesome apps we love in class. Quick Math for $1.99, students have to write the answer on the ipad. This app increases in difficulty and includes multiplication and division. If you have older students it is excellent for them as well. Math Bingo ($1.99), in this app the children are so busy playing that they don't even realize how much math practice they are getting. Check out Addimals (free), it goes through different addition strategies. Last, I recommend Add and Subtract within 20 ($0.99), this app works on missing numbers in equations.
Don't have an iphone or ipad? Here are a couple links to interactive web games that work on fact fluency. They even have a winter theme!
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