Hello Year 10 Math!

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

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Problem 1 - LilliesFirst 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 videoQuestion: 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 daySee video

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

Let’s get some help from Sesame

Street

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 > 1 a < 0, 0 < b < 1

Index laws

Prove ‘em

And the winners are?

Thank-you!