Book3

0) Elapsed Time (23-Feb-07)

1) Regroup to subtract (29-Dec-06)

2) Regroup to subtract 1 (29-Dec-06)

3) Count up to subtract 2 (29-Dec-06)

4) Count up to subtract 1 (29-Dec-06)

5) Breaking minutes into hours and minutes (29-Dec-06)

6) Counting up time (29-Dec-06)

7) 15 minutes (29-Dec-06)

8) Half an hour (29-Dec-06)

9) How many hours are there in a day? (29-Dec-06)

10) What time does something start or finish (29-Dec-06)

11) How long something takes (29-Dec-06)