1. Click . 2. Use the feature to listen to the word problem. 3. the unifix cubes to build towers showing the comparison word problem. 4. Use the to draw a line matching the pairs in the towers. 5. Count how many cubes don't have a pair. That is the answer to the equation (the missing part). 6. Use the or tool to write the equation. **Remember, it is a subtraction equation even though nothing is being taken away. 7. When you've solved all of the slides, click to submit.