Watch the instructions (link to the left) Click to start the activity. On the second slide, complete the Think About It! Use the , or tools to explain your reasoning. On the third slide, watch the video instructions and use the tool to rearrange the puzzle so that each expression is next to it's equivalent. On the 4th slide, show me the work to at least 3 problems from the puzzle. You may use the tool to upload a picture of your work or use the tool to show your work on the screen. Don't forget to rate your level of understanding on the last slide using the tool. When finished, click to submit. If you need to complete at a later date, click to save your work.