Topic 1 algebra lesson 1

[object Object],Preliminary General Mathematics Topic 1 Algebra

Welcome ,[object Object],[object Object],[object Object],[object Object]

Welcome ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Technology stuff... ,[object Object],[object Object],[object Object]

phones, ipods etc ,[object Object],[object Object],[object Object]

Pre Test ,[object Object],[object Object],[object Object]

FLOWERBEDS Here are four flowerbeds surrounded by slabs How many slabs would you need for 100 flowerbeds?

STRATEGY ,[object Object],[object Object],[object Object],[object Object],[object Object]

You can work in groups of up to 2! :) your solution needs to be written up with a full explanation

Break the problem into smaller pieces 1 Flowerbed has 6 slabs Draw the diagrams for 3 and 4 flowerbeds 2 Flowerbeds have 10 slabs

Tabulate results 14 18 Flowerbeds Slabs 1 6 2 10 3 4

Look for patterns… 14 18 +4 +4 +4 … and why they occur Flowerbeds Slabs 1 6 2 10 3 4

… and why they occur 6 +4 +4 +4 + 3 lots of 4

Find a formula Flowerbeds Working out Slabs 1 6 + 0x4 6 2 6 + 1x4 10 3 6 + 2x4 14 4 6 + 3x4 18

6 + 4x4 6 + 9x4 6 + (n-1)x4 22 42 6+4(n-1) Flowerbeds Working out Slabs 1 6 + 0x4 6 2 6 + 1x4 10 3 6 + 2x4 14 5 10 n

Solve the problem 100 flowerbeds?

[object Object],[object Object],[object Object],[object Object],[object Object],Homework

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