Separate+Start+Unknown

= Separate Start Unknown =

= Connie had some marbles. She gave 5 to Juan. Now she has 8 marbles left. How many marbles did Connie have to start with? =

Direct Modeling: Strategy: Trial and Error ?

Modeling: Strategy: Join All 5+8=?



Counting: Strategy: Count on From First 5 * * * * * * * * 6 > 7> 8> 9> 10> 11> 12> 13



Strategy: Count on From Larger

8 * * * * * 9> 10> 11> 12> 13



Facts: Number Facts ? - 5=8 I know 5+5 ---10+313