1. Strip diagrams can give a quick visual for adding, subtracting, multiplying, or dividing. Strip diagrams have a “total”. (It is the longest strip). Strip diagrams have 2 “strips” – One strip is the total while the other strip is put into parts and shows how that total is represented. Strip diagrams encourage the use of relationships between number values and the knowledge of numeracy. Strip diagrams can help solve story problems. STRIP DIAGRAMS

2. Add: s = 40 + 8 Therefore, s = 48 Subtract: d = 35 – 15 Therefore, d = 20 STRIP DIAGRAMS s 40 8 d 15 35

3. Multiply: p = 3 x 7 Therefore, p = 21 Divide: 54 ÷ 6 = f Therefore, f = 9 STRIP DIAGRAMS p 54 7 f ffff f 77

4. Other examples: STRIP DIAGRAMS 18 19 ? ? 389,401 98,000 97,000

5. STRIP DIAGRAMS 1. How is a strip diagram like a balance scale? 2. What are variables and why are they used? 3. What strategies can be used to solve for the unknown?