- When asked, "You had some balls. Then you get 6 more. Now, you have 11 balls. How many did you start with?", lays out 6, then 3 more, counts and gets 9. Puts 1 more with the 3...says, "Ten," then puts 1 more. Counts up from 6 to 11, then re-counts the group added, and says, "Five!" (join, start unknown problem; counting up to strategy)
- When asked, "You have 11 pencils and give 7 away. How many do you still have?", says, "Seven...eight, nine, ten, eleven," while putting up four fingers, and says, "Four!" (separate, result unknown problem; counting up to strategy)
Help your student become a(n) Part-Whole +/-
These activities challenge children to solve all the addition and subtraction problem types they have already learned to solve with more sophisticated strategies, including more use of finger patterns and even some well-known combinations (e.g., "3 and 3 is 6").
Break and Make
Adding/Subtracting Problem Types