For each problem, decide whether it is a JRU type, or SRU. Click here for answers.
1. Shauna had 4 balloons. 3 of her balloons popped. How many balloons did she have left?
2. Jane made 5 origami animals. Later she made 1 more origami animal. How many origami animals did she make in all
3. Diana had 12 grapes. She ate 3 of her grapes. How many grapes did she have left?
4. Blake had 4 Beyblades. For his birthday, he got 1 more Beyblade. How many Beyblades does he have now?
5. Marie had 6 stuffed animals. When she cleaned her room, she found 1 more stuffed animal. How many stuffed animals does she have now?
6. Laura had 11 marbles. She gave 2 of her marbles to Alex. How many marbles did Laura have left?
Decide for each statement whether it is true or false.
7. The first step in modeling both SRU and JRU problems is to count out the starting amount of counters.
8. Some Join and Separate problems have an amount that changes over time, but some don't.
9. JRU problems are easier for children to direct model than SRU problems.