Year 2 maths
Year 2 have been working on money and place value.
Year 3 maths
Year 3 have been revising different ways to add and subtract. They have also been working on place value.
Only gifts that total a multiple of 10 can be put in! I wonder how many they managed to include . . . .
Year 3 must create the correct sized wrapping paper to fit around the gifts Santa needs to wrap. Year 2 are learning to accurately measure in cm and mm.
They use their measuring skills to check they have the shortest route.
Recap counting out loud in 2’s to 20. Can you recite them from any given starting point?
Can you write down the numbers in the 2 times table?
Can you work out the answer if your grown-up gives you these sums;
Introduce the terms “odd and even”. Can you remember what they mean?
All of the numbers in the 2 times tables are even. If a number is even it means it can be shared out equally between two people. If it can’t then it must be an odd number! You could try this by using socks. Collect lots of individual socks and try and pair them all up. If they all pair up then that means you have an even number of individual socks. If there is 1 left over it means you have an odd number of individual socks.
Count from 1 to 20 together. Can you shout the even numbers and whisper the odd numbers? What pattern do you notice?
Teaching point – remember when looking at a 2-digit number we have to look at the last number, the number in the ten’s column, to decide if it is odd or even.
Can you try and play the odd / even game attached to help you learn which numbers are odd / even up to 20. Using the track, you can roll a dice and if you land on an odd number you get a rest. If you land on an even number however you must do the action it says and for that many times! You could then create your own actions if you want or swap it over and rest for evens, do an action for odd!
Extra: Can you work out if some other numbers are odd or even. You could;
- Draw a 100 square and colour the even numbers one colour and the odd numbers a different colour
- Make two columns called “odd” and “even” and ask your grown up to call out a number up to 100. You then decide which column you should write the number in.
- You could build an odd box and an even box post cards with a number on them into the correct box.
Can you come up with a rule to help other people remember what makes a number odd or even?
Can you remember which numbers are odd and which numbers are even? What do all even numbers end in? What do all odd numbers end in?
Introduce the term “doubling”. This is when we add a number to itself so;
- 2+2 =?
You should hopefully know lots of the answers off by heart – you can use your hands to practice all the double up to double 5.
To help you remember some of your doubles you can use a dice. You can roll a dice, count the spots and then double that number. It would be helpful to draw the dots on some paper.
Can you go and find 20 small items around the house so we can practise doubling different numbers and finding the answers.
Your grown up can call out a number from 1-10.
- You will need to collect that many items and put them in one pile.
- You will then need to double that number by making it again out of the remaining objects.
- Put these in another pile. Any items you haven’t used we can ignore for now.
- Count all the items in the two piles you have made. What is your answer?
- Put them all back together into one large pile, including the ones you didn’t need to count.
- Choose a new number and start again.
- Use paints to explore doubles – maybe you could draw a ladybird or a butterfly and start by painting one spot on it. Then carefully fold your paper over so the paint spot is now on both sides. You have doubled the spot from 1 to 2. You could then keep going. Can you paint all the way to 10 spots on each side. (Examples attached)
- If you have more than one dice you can use two. Roll the dice, add up the spots on both dice and try and double that number.
Can you start to explore what happens when an odd number is doubled?
What about when an even number is doubled?
Can you find a rule?
Can you recall all your doubles to double 10? Can you write them down?
Can your grown-up give you an answer to a double and see if you can work out which number would be doubles to give that answer? So if I said 6 you could work out that double 3 equals 6. If I said…….
- 8…..what number doubled gives 8?
- 10…..what number doubled gives 10?
- 14…..what number doubled gives 14?
Introduce the term “halving”. This is the opposite of doubling. When we double we get more, but when we half we get less. When we halve a number we share it out equally into 2 groups.
Teaching point -we can double any number but we can only halve the even numbers. Can you pick an odd number, maybe you can find some objects to use, and try and share them equally into 2 groups? What happens? Do you have 1 left over?
Using the doubles facts up to 10 that we know can we find the related halving fact?
So first, let’s find all our even numbers.
2 Double 2 = 4. So to half, we take our answer 4 and share it equally into two groups. Now count how many are in each group……you should have 2! Half of 4 is 2. Can you complete the rest?
- Create some flashcards of the doubling and halving facts you know. You oculd put the double on one side and the half on the other.
- Can you halve some bigger even numbers?
- Can you quiz and check everyone in your family knows? You can teach them if not.
- Watch the interactive video; https://www.youtube.com/watch?v=80dY2WiXPw8
- Don’t forget to do your Doubling and Halving added Extras on Doodle!
Can you try and put all your Maths learning this week together?
- Could you pick 3 random odd numbers to double?
- Can you pick 3 random even numbers to half?
- What is the smallest even number?
What is the biggest odd number you can think of?