Monday, November 24, 2014

Solving Math Stories Using Bar Modeling

We absolutely L-O-V-E bar modeling because we can show how we solve math stories, or word problems in an engaging and challenging way!
The children have been working hard to solve each math story by answering these four questions:
1.  What do we already know?
2.  What type of bar model would work best to solve this math story?
3.  What question(s) are we trying to answer?
4.  Are there any "hidden" questions to answer? (may require multiple steps)

Here are several examples of students writing their own math stories using the app Educreations on our iPads, and then demonstrating their mathematical thinking and problem solving skills using bar models.
After creating and solving our own math stories, we swapped iPads and solved another classmate's math story.

Cole has written a part-part-whole math story and solved it using bar models.

We've used several different strategies to help us solve math stories, and your children really love the challenge of solving more complex math stories, so take a peek at some of the addition and subtraction word stories we have solved in class.  Please click below to practice your bar modeling skills using Thinking Blocks.

Erin uses technology to help demonstrate her mathematical thinking.
The answer is 127... what is the problem?  Trey demonstrates solid mathematical thinking by working backwards!
Bea proudly displays her math story using solid problem solving skills!


Common Core Standard 2.NBT.B.7 

Number & Operations in Base Ten

Use place value understanding and properties of operations to add and subtract.

 Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

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