Thursday, 25 September 2014

Putting numbers in their place.

When you are still one or two years off turning into a two digit number yourself, thinking about numbers with four digits can sometimes be tricky. But that is what we turned our minds to in the second half of this week, THTU or Thousands, Hundreds, Tens and Units. Some of us had to work in teams in class to make massive long number lines going from 0 to 1000. Each group had to use a different scale for their number line and we needed to sort ourselves out so we didn't all just start at zero and make the same section. Another group were outside again collecting different things from the playground which we then had to put in the correct place on our super long number line when we took it outside. We all hope the good weather stays so we can keep enjoying getting outside for maths.

Preparing one of our number lines.


Going up in units of 25 to 1000.
   
How long?

How many? So where does that go on a 1000 number line?

Our lovely grounds are a great resource for our maths, science and literacy lessons.



We have the CAPACITY for learning!

Two heads are better than one.
We started the week thinking about adding and subtracting to 1000 in maths as we carried out some investigations into capacity and mass. The sun was shining for us when we, firstly had to think about how much more water was needed to top up the 1 litre bottles and then we carefully measured the exact amount to top them up. The hardest part was carefully looking at the marks on the side of the measuring containers as some of them increased by 25 ml, ml means millilitres, some by 50 ml and some by 100 ml. You really have to look super close and keep the water level steady to be exact. Doing maths outside helps us remember that you can do maths everywhere.

Helping each other helps us to learn.
We look so pleased as our estimate of 350 ml was exactly correct!

Sunday, 21 September 2014

How many ways to make ...?

Along with using Numicon we have also been using number rods to explore the many different ways that we can combine numbers to make another number. The number rods are great for this type of work as we can actually see if our initial ideas are working out. Just look at how many different ways we came up with for a total of 12. Some of us needed lots of rods when we were working on making a total of 20. The colourful rods certainly brighten up our learning in class. The tricky part is fitting them all back in the box at the end of the lesson!
Keeping an eye on 1 to 10.


20 different ways to make 12.

Checking our work is always a good idea.

So if 10+10=20, then ...

Saturday, 20 September 2014

Ganges Class Maths Blog is OPEN!

New Numicon Arrives.

With the start of the new term everyone in Ganges class is using the new supply of Numicon resources we have just received in class. Practically showing our understanding is a great way to help us in our learning. Numicon is colourful, bright, tactile and can be used for all four operators - add, subtract, multiply and divide. Just look at the many different ways we can use number bonds to make 10. Perfect!
Different ways to make 10.

Different ways to make 8

Working together helps us learn.

Sometimes we run out of desk!