Supporting the learning needs of ‘high achieving students’. Exploring mathematical patterns with cards, circles and grids

Mā te huruhuru ka rere te manu. It is the feathers which enable the bird to fly.

Consider…. x x x x x x x x Mt Tawarewa

How did that work? Ideas to share?

"Choose any two digit number, add together both digits and then subtract the total from your original number. When you have the final number look it up on the chart and find the relevant symbol. " mysticalball

The Fish Tank You have a fish tank containing 200 fish and 99% of them are guppies. You will remove guppies until 98% of the remaining fish are guppies. How many will you remove?

Using the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 once and only once. Where can they be placed so that the horizontal sum equals the vertical sum. 2 7 1 3 8 9 6 4 5

Some foundation work Calculate 5 × 7 19 × 21 299 × 301

Do you see a pattern? What about: 24 × 26 119 × 121 (n − 1 )(n + 1)

Let’s try 14 × 16 10 × 10 10 × 6 4 × 10 4 × 6

(n − 1 )(n + 1) = n2 - 1

Take a number Take a number Square that original number Cube that original number Add five times the original number and add this to the cube of the original number What do you notice?

10 playing cards Watch the demonstration… How can you do order the pack so that you can replicate this?

What is the least consecutive … What is the least number of consecutive natural numbers so that adjacent numbers are: 2 units apart 3 units apart 4 units apart n units apart.

There’s a grid over there!

How long does it take to paint the house? If Sally can paint a house in 4 hours and John can paint the same house in 6 hours, how long will it take for both of them to paint the house together? 1 house 1 2 4 6

Answer Sally can paint 1/4 of a house per hour. John can paint 1/6 of a house per hour. Let's say the answer is t hours for the total job. Then (1/4)t + (1/6)t = 1 (1/4 + 1/6)t = 1 (6/24 + 4/24 )t = 1 (10/24)t = 1 t = 24/10 hours = 2.4 hours If Sally can paint a house in 4 hours, then she can paint 1/4 of a house in 1 hour. If John can paint a house in 6 hours, then he can paint 1/6 of a house in 1 hour. Let x be the number of hours it would take them to paint the house. Working together, they can paint 1/x of the house in one hour, so 1/4 + 1/6 = 1/x Multiply by LCD, so 12x (1/4 + 1/6 = 1/x) 3x + 2x = 12 5x = 12 x=2.4 hours. Also, 40% of 60 minutes is 24 minutes. Final answer = 2 hours and 24 minutes.

A third painter… What if Wirimu can paint a house in 5 hours and he was able to assist Sally and John, how long will it take for the three of them to paint the house together? 1 house 1 2 4 6

Making links Graphically Numerically Algebraically -generalising Looking for patterns. Draw / display examples to give you some ideas Plotting points on a graph to display your examples Making links Graphically Numerically What type of graph is it? Generating a numerical pattern / sequence Straight Line Linear? Algebraically -generalising Other? What is the rule?

Questions?