Posted in Calculating, Games

Bottle Top Bugs – Collect the bugs

Collect the bugs

You need:

A set of bottle top bugs  (0 – 12)

A set of leaves to put the bugs on (optional)

2 dice

Set out the leaves with one bug on each leaf.  Take turns to roll both dice and use either addition or subtraction to capture a bug. For example, if you throw a 5 and a 3 you can either add the numbers together, 5 + 3 = 8, and capture the 8 bug, or you can subtract the numbers, 5 – 3 = 2, and capture the 2 bug.

collect the bugs

Explain your reasoning like Digit Dog.

When all the bugs have been captured, the player who has most bugs is the winner.

Which bugs are easiest to capture? Why do you think that?

Which bugs are more difficult to capture?

Posted in Calculating, Counting, Games, Subitising

Bottle Top Bugs – Who has more?

Who has more?

You need:

A set of Bottle Top Bugs

A feely bag / box or cloth

Put your bottle top bugs in a feely bag or a box or under a cloth. Each player takes one bug out, puts it in front of them and says how many spots there are. The player with more spots captures both bugs.

Who has more?

Keep playing until all the bugs have been used. The winner is the player who has  captured most bugs.

Ask:

Who has more spots? How many more?

Say:

I have ……. spots. I have ……. more spots than my friend.

Make sure that learners also practice using the word fewer.

Who has fewer spots? How many fewer?

I have …….. spots. I have …….. fewer spots than my friend.

Practise subitising (saying how many spots there are without counting in ones).

When you turn over a bug, say how many spots there are without counting in ones. How do you know how many spots there are? Calculating Cat knows she has 11 spots because she saw two groups of 5 plus 1.

Vary the game

Change the rules so that the player with fewer spots wins.

Players take two bugs and add the number of spots together. They then compare their totals. The player with the greater total captures all four bugs.

Players take two bugs and find the difference. They then compare their differences. The player with the greater / smaller difference captures the four bugs.

Posted in Logical reasoning, Mathematical language, What do you notice?

Bottle Top Bugs – What do you notice?

 

Digit Dog and Calculating Cat have arranged their bugs in 4 rows of 4.

What do you notice?

How many ways can you finish the sentence?

I notice that……….

Screenshot 2018-06-06 12.20.39

Is Calculating Cat correct? Or has she made a mistake? Convince me. Explain your thinking.

What can you say about:

  • the rows?
  • the columns?
  • the number of bugs?
  • patterns in the numbers on the bugs’ backs?
  • diagonal patterns?
  • odd ones out?
  • totals of spots?
  • their eyes?
  • anything else?

Digit Dog is also asking What do you wonder?

Look at the bugs and finish the sentence – I wonder…………..

How many ways can you finish the sentence? You might say things like:

I wonder what the total of each row is……

I wonder which row has the lowest total……..

I wonder if I can arrnage the bugs in order………

Collect the I wonder statements to use as challenges and activities.

Posted in Counting, Mathematical language, Subitising

Bottle Top Bugs

Wondering what to do with the tops of plastic milk bottles?

Make a set of Bottle Top Bugs.

Draw eyes and spots. Think about the patterns of spots – this arrangement focuses on the pattern of 5. The numbers above 6 are arranged as “5 and some more”.
The spots on these bugs are arranged to match the Numicon shape patterns.
These bugs have “goggly eyes” and the spots are divided into two so that number bonds can be explored.

Look at your bugs.

Count the spots and put the bugs in order.

Try to say how many spots there are without counting in ones. Start to recognise patterns.

Find the Bug

Find the bug with 5 spots. Now find the one with one more than 5, one less than 5, two more/less than 5.

Find two bugs that have 8 spots altogether. Can you find another two with 8 spots? How many different pairs can you find? How do you know you have found them all?

COMING NEXT

More activities with Bottle Top Bugs.

Posted in Calculating, Making totals, Numicon

Total 6

Total 6 is an extension of Investigating totals

Put the shapes on the grid but this time each row, column and diagonal has to total 6.

6 grid

You might want to start by:

  1. Just making each row total 6. Then try
  2. Just making each column total 6. Follow this by
  3. Making both the rows and columns total 6, and finally
  4. Include the diagonals too.

Which shapes are you using in each row / column? Why?

Is there more than one way of completing the grid?

Look at your partner’s grid. What is the same and what is different?

Make the task more challenging:

  1. Use digit cards instead of the shapes.
  2. Don’t give the total – Can you put the Numicon shapes on the grid so that each row, column and diagonal add to the same total?

What do you think the total might be? Why?

How are you going to start? What are you going to try first?

What if.……..you used three different consecutive shapes?

3 twos, 3 threes and 3 fours                                 3 threes, 3 fours and 3 fives

Screenshot 2018-09-26 14.28.32or   Screenshot 2018-09-26 14.28.43

What will the totals of each row be now?

Screenshot 2018-09-26 15.51.01

Posted in Calculating, Making totals, Numicon

Investigating totals

Digit Dog has got a 3 x 3 grid and 9 Numicon shapes – 3 one shapes, 3 two shapes and 3 three shapes. He is going to put the shapes on the grid and investigate the totals he can make.

Screenshot 2018-09-23 15.50.21

This is what he does first:

Screenshot 2018-09-23 15.50.32

Copy what Digit Dog has done.

Digit Dog says that the sum of the shapes in the first row is 6. Do you agree with Digit Dog? Why or why not? Are you sure?

Expecting learners to explain their thinking helps develop their reasoning skills.

If you agree, convince me that Digit Dog is correct. If you don’t agree, explain why you think he is wrong.

Encourage learners to explain why the total of the first row is 6. Use the Numicon shapes to show that the 3 shapes in the first row are equivalent to a six-shape. Explanations are much easier when you use concrete apparatus.

Screenshot 2018-09-23 18.01.53     Screenshot 2018-09-23 18.01.40

Screenshot 2018-09-23 18.07.13

Use the pan balance to explain.

Calculating Cat says that the total of the shapes in the third column is 6 too. Is she right? How do you know?

What is the same and what is different about Digit Dog’s row and Calculating Cat’s column?

Can you find any other rows or columns that total 6? Are there any that total more than 6? What about less than 6?

Can you find a row or column that totals 1 more than 6? What about 1 less than 6?

What else do you notice?

Find a way to record the totals you have found?

Now arrange the shapes on the grid in any way you want and investigate the totals that you make. What do you notice? What is the largest total you can make? The smallest total?

Look at a grid your friend has done. What is the same? What is different?

What if you used other shapes?