In this activity, students will compute real-world problems with rational numbers while using a digital number line. Students are provided a sample problem to work through to become familiar with the digital number line. Since problems can be solved using multiple methods, students are asked to provide a number sentence to represent their number line model as well as the solution to the problem. Through the online digital tool, students can also share a link to their work with their teacher or classmates. This provides a great opportunity for students to investigate how to solve problems using multiple methods.
Using Number Lines to Model Real-World Problems Student Response Page
In this introductory activity, students will use two-color counters to explore adding integers. Students will also develop a working definition of the additive inverse. Using online two-color counters, students will discover algorithms for adding integers. Finally, students will develop addition integer rules based on the solutions to the mathematical sentences modeled using the two-color counters.
Adding Integers Using Two-Color Counters Student Response Page
In this learning activity, students are introduced to the concept of adding and subtracting positive and negative numbers through an animated free math video from GCFLearnFree.org. In the video, a bird demonstrates how to move up and down the number line based on the operation and integers in the equation. It is a clever way to remember which direction to move based on the positive and negative numbers in the equation. Students then practice the tricks they learned using an interactive game.
This activity was created as a result of the ALEX Resource Development Summit.
In this free learning activity from Illustrative Mathematics, students will be presented with a real-world problem involving Evan and his school bookstore account. Students will need to use the tricks they have learned about adding and subtracting positive and negative numbers to help Evan with his school bookstore account and justify their reasoning.
In this free interactive math learning activity from Math is Fun, students gain an understanding of adding and subtracting positive and negative numbers by “playing” with an interactive tool.
This activity results from the ALEX Resource Development Summit.