In working to develop number sense in our second grade students, we spent time on activities that encouraged students to visualize numbers and think about number combinations. We did quick image activities with ten frames, solved Splat! questions (thank you Steve Wyborney!), played Shake and Spill, and conducted other related activities.
For quick images with ten frames we used both horizontal and vertical sets of ten frame cards. Cards were flashed for 2-3 seconds and then hidden. Students were asked:
- What number did you see?
- How did you see it?
- How many more to 10?