1. MATH 3rd Grade: Luther waited 50 minutes in line to buy tickets to a play. While waiting, Luther played his video game for 12 minutes and read a book for 25 minutes. The rest of the time, Luther talked to his best friend Chuck. How much time did Luther spend talking to Chuck?

2. S: Okay, so the first step in the STAR strategy is for me to search the word problem. That means I need to read the problem carefully, and write down what I know and what I need to find. T: My next step is to translate the problem using a strategy for organizing information. (picture form, look for a pattern, guess and check, etc.) A: Then I need to answer the problem. Write the number sentence and solve. R: Finally, I need to check my answer. OK, I’ll reread the word problem and check the reasonableness of my answer.

3. S: Okay, so the first step in the STAR strategy is for me to search the word problem. That means I need to read the problem carefully, and write down what I know and what I need to find. What I know: *Luther waited 50 minutes in line *While waiting, he played his video game for 12 minutes *read a book for 25 minutes *rest of the time talked to his best friend Chuck Need to find out: * How much time did Luther spend talking to Chuck

4. T: My next step is to translate the problem using a strategy for organizing information. (draw a picture (pictorial form, look for a pattern, guess and check, etc.) Total – 50 (base ten-block) l l l l l Video – 12 l.. Read book – 25 l l l l l..... time left spent - talking left means take away from/less/decrease/subtract

5. Take the total and subtract the video and the reading book. l l l l l regroup to l l l l.......... Video – 12 cross out l.. Read book – 25 cross out l l..... What is not crossed out is what is left of the 50 minutes l... = 1 tens and 3 ones = 13

6. A: Then I need to answer the problem. Write the number sentence and solve. 50 = 12 + 25 + ? (the 50 minutes total equals 12 minutes for video game plus the 25 minutes reading a book and finally the unknown time for talking to Chuck) 12 + 25 = 37 (I do know that 12 minutes went to video games and 25 went to reading and they both have the sum of 37 minutes) 50 – 37 = 13 (Of my total 50 minutes, I used 37 on video games and reading and was left with 13 minutes to talk to Chuck)

7. R: Finally, I need to check my answer. OK, I’ll reread the word problem and check the reasonableness of my answer. 12 minutes plus 25 minutes plus 13 minutes must equal 50 minutes 12 + 25 + 13 = 50 or my total minutes less my 13 minutes of talking should equal the minutes spent on video game and reading 50 – 13 = 37