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Intro to Adding/Subtracting Rational Numbers
How can you add two numbers and arrive at zero? Use negative integers! Assign each group a different problem to solve as a team. The lesson plan says to have them use Geometer's Sketchpad® to check their answers, but if you do not have...
6th - 8th Math CCSS: Designed
Fabulous Fibonacci and His Nifty Numbers
Fibonacci numbers are not only found in the classroom but also in nature. Explore the concept of Fibonacci numbers through a series of lessons designed to gain insight into the mathematical reasoning behind the number pattern, and spark...
3rd - 5th Math CCSS: Adaptable
Integers: Addition and Subtraction
Young mathematicians construct their own understanding of integers with an inquiry-based math activity. Using colored chips to represent positive and negative numbers, children model a series of addition and subtraction problems as they...
5th - 8th Math CCSS: Adaptable
Adding Mixed Numbers (Unlike Denominators)
Mix things things up in your elementary math class with a series of problem-solving exercises. Presented with a series of mixed number word problems, young mathematicians are asked to solve them by using either visual fraction models or...
3rd - 6th Math CCSS: Adaptable
Applying the Properties of Operations to Add and Subtract Rational Numbers 2
The ninth part in a 25-part series emphasizes the importance of using properties of operations in evaluating sums and differences of rational numbers. Pupils solve problems and provide justifications from one step to the next.
7th Math CCSS: Designed
Addition and Subtraction of Mixed Numbers
Demonstrate the process of adding and subtracting mixed numbers using a video tutorial. A video instructor explains the steps of combining mixed numbers as she works through several examples. The examples add and/or subtract up to four...
6 mins 3rd - 7th Math CCSS: Adaptable