# Hello Year 10 Math! - PowerPoint PPT Presentation

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Hello Year 10 Math!. Into 2 groups please...must have a boy and a girl.

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Hello Year 10 Math!

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### Hello Year 10 Math!

• Into 2 groups please...must have a boy and a girl..

http://images.google.co.id/imgres?imgurl=http://lahabra.seniorhigh.net/PAGES/teachers/FoxTrot/2001_11_04.gif&imgrefurl=http://lahabra.seniorhigh.net/PAGES/teachers/pages/mathCartoons.html&h=276&w=596&sz=48&hl=id&start=3&um=1&tbnid=OzJayXeEnaOI3M:&tbnh=63&tbnw=135&prev=/images%3Fq%3Dmaths%2Bcartoons%26svnum%3D10%26um%3D1%26hl%3Did%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DN

### Problem 1 - Lillies

• First correct answer - yell it out

• A pond has a lilly growing in it that doubles in size every day. It takes 30 days to cover the pond. On what day will it cover a quarter of the pond?

### Problem 2 - Pay it forward

• See video

• Question: The USA has a population of 307,006,550. If it takes each person a week to ‘pay it forward’, how long before everyone in the USA has something good done for them?

### John McClane is having (another) bad day

• See video

• What’s the phone number the need (shhhh, don’t let on...)?

• See video

### Back to John and Zeus...

• As I was going to St Ives

• I met a man with seven wives.

• Every wife had seven sacks,

• Every sack had seven cats,

• Every cat had seven kits.

• Kits, cats, sacks and wives,

• How many were going to St Ives?

• What was that phone number?

### Exponential equations

• Exponential equations take the form of:

• Find what each variable does algebraically and graphically, and make a general statement for each - final product on A3 for display ( ‘a’ will..., ‘b’ controls how... ‘c’ controls...... etc )

• And make sure it says what happens if to the graph when…

• a > 0, b > 1 a > 0, 0 < b < 1

• a < 0, b > 1a < 0, 0 < b < 1

• Prove ‘em
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