Graphical Approach to solve multi-step problems A farmer wants to know how many pigs and hens are on his farm. He asks his children to count the animals.

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Presentation transcript:

Graphical Approach to solve multi-step problems A farmer wants to know how many pigs and hens are on his farm. He asks his children to count the animals on the farm. His children determined that there are 70 heads of pigs and hens and 200 legs altogether.

Graphical Approach to solve multi-step problems A farmer wants to know how many pigs and hens are on his farm. He asks his children to count the animals on the farm. His children determined that there are 70 heads of pigs and hens and 200 legs altogether. How could the number of pigs and hens be determined?

Graphical Approach to solve multi-step problems P Pig:Hen: H Heads: PH 70 Legs: legs2 legs

Graphical Approach to solve multi-step problems P Pig:Hen: H Heads: PH 70 Legs: 200 PPPPHH

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH How many pigs? How many hens? P H

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH Rearrange PH

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 P P P PHH Rearrange PH

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 P P P PHH Rearrange PH

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH Rearrange PH

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH Rearrange PH 70 ?

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH 70 60

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH 70 60

Graphical Approach to solve multi-step problems Heads: PH 70 Legs: 200 PPPPHH P = 30 H = 40

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