Model Method - Questions and AnswersQuestion posted by Tina from Singapore: Grade/Level: Primary 2 Question: PLEASE TELL ME HOW TO EXPLAIN THIS WORD PROBLEM TO MY PRIMARY TWO DAUGHTER. THIS PROBLEM WAS ON THE E-PORTFOLIO ASK-N-LEARN WEB PAGE OF HER PRIMARY SCHOOL WEBSITE. QNS) DELVIN AND CHRISTINE COLLECTED 46 SEASHELLS. DELVIN COLLECTED 4 MORE SEASHELLS THAN CHRISTINE. HOW MANY SEA SHELLS DID DELVIN COLLECT? ANS) THE ANSWER ON THE ASK-N-LEARN E-PORTFOLIO IS DELVIN COLLECTED 25 SEASHELLS. I DREW THE MODEL FOR THE SUM. I SOLVED THE SUM USING SIMULTANEOUS EQUATION METHOD. DELVIN IS X AND CHRISTINE IS Y x+y=46 (y+4)+y=46 4+2y=46 4+2y=46 2y=46-4 y=42divided by2 y=21 Christine is 21 so delvin is 21+4=25 how can i explain this method to a primary two student. please advise Answer: Step 1: Draw 2 identical boxes to show that Delvin and Christine had the same number of seashells.
Step 2: Draw an additional box to the right of Delvin's box and label it "4" to show that she had 4 more seashells than Christine.
Step 3: Since the total number of seashells they had was 46, draw a bracket to the right to show the total "46". Then draw another bracket on top of Delvin's 2 boxes to show that that was what Delvin collected. 
From the model, 46 - 4 = 42 42 / 2 = 21 21 + 4 = 25 Thus, Delvin had collected 25 seashells
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