Even Group's Extreme Multiplication

In term four, the even group completed a marvellous unit on multiplication. We've worked very hard and learnt alot about what multiplication means and how it works. We did lots of fun, hands on activities and we learnt that multiplications can mean times, repeated addition and of course "groups of". We discovered that we already knew lots about multiplication - doubles, sharing evenly and skip counting are actually also multiplying!

We began by talking about arrays... this are when a number is laid out in equal columns and rows, it's a good way to see how many "groups of" you have. We looked at different ways of making groups of for the same number and how to write number sentences using the x symbol. We did number investigations, learnt about square numbers and drew factor trees for different numbers. Finally, we made our own times tables charts for our portfolios and times tables cover up to play at home. It was a wonderful, multiplicative, learning adventure!

Clarrie – I learnt that maths is sometimes fun.

Mariana – I discovered that 6 times 3 equals 18 and 3 times 6 is 18 as well.

Riley – I learnt that 4 +4+4+4+4+4 = 24 is also 6 times 4

Sean – 6 multiplied by 4 equals 24

Max - I had fun!

Audrey – I learnt all about 24. I found out that 24 is a cool number because it has lots of different ways of making itself.

Aimee – I learnt that four rows and 6 columns are 24.        

Sophia - I was looking at 18. I discovered that I knew more about it than I thought I did.

Lewis - One row of twenty four equals 24.  

Sarah - We weren't just learning about Multiplication. Multiplication is repeated addition. 

Dan P - I looked at 24. I found out that two rows of 12 equals 24.

     

Race to Zero!!

Yesterday we learnt about addition, which is part of maths, you add numbers together with a plus sign (+) and the numbers get bigger. That's why they call it adding UP! Today we learnt all about subtraction (-) or take away (not the kind you eat). When you take away numbers they get smaller.

We played race to zero. To play race to zero you need two counters, one for each player (we used buttons) one six-sided die and a number line that goes from zero to twenty. Both players start with their counters on twenty, the first player rolls the die and they work out in their head, what nnumber they will get if they take that number away from twenty. Then they bounce their counter back to that number. The next player has their go and does the same. The winner is the first person to zero. When you get close to zero you need to roll the exact number to go back to zero. If you're on one, you must roll a one to win.

My strategy I used to work out the number I got was counting in my head in twos, if it was even. Lola

I liked how Allister was a good sport, even though he beat me two times. Charlotte

I liked having a guess and predicing what it would land on. I got it right! Tahlia

I liked playing it, I played with Rhiannon and I won. You got mixed up counting back but then I got it right. Lizzie

I enjoyed the game and I won three times! Dean

I liked race to zero, I liked winning too. Allister

It was very fun. I won two times. Clarrie

I played with Vasco and we both won it. Leila

I leant you can use rainbow numbers for taking away from twenty. Jamil

I counted a little bit and I guess what I would land on. I was right most of the time. Hamza

I tried to think what their counter is going to land on. Jordie

I enjoyed the game alot, it helped me to subtract! Tegan

Rainbow Cover Up

This week we learnt all about rainbow numbers. Rainbow numbers are pairs of numbers that add up to ten: 0 and 10, 1 and 9, 2 and 8, 3 and 7, 4 and 6 and 5 and 5. They are called rainbow numbers because if you draw a loopy line between them on the number line... it makes a rainbow! Our goal is to learn the rainbow numbers so we know them like lightning. A really fun way to practice is by playing Rainbow Cover Up. Here is how you do it:

To play you need
two players
a handful of counters (or buttons) of the same colour (a different colour for each player)
a ten-sided die *
a cover up game board (it only takes a moment to make your own, have a look at the pictures)

The Rules
The players take it in turns to roll the die. When you roll a number, you put your counter on the rainbow number partner of that number. For example, if you roll a 6 you put it on 4. If there is already one of your opponents counters on that square, you can push it off. If you get the rainbow number wrong, you don't get to put a counter down.

You keep playing until all the squares are covered. The winner is the person with the most counters on the board. The winner gets to have the first roll in the next game!

*If you want to play at home and you don't have a ten-sided die, you can write the numbers 0-10 on pieces of card and draw them out of a bag or bowl.