Aisha’s division and subtraction calculations both gave the same answer! Angus from Australia also articulated the rules very clearly. You have been very systematic in your working, Kaan, well done. Troublesome Triangles Many natural systems appear to be in equilibrium until suddenly a critical point is reached, setting up a mudslide or an avalanche or an earthquake. If I made groups of 6, I found every sum increases by 36 6 x 6. If I made groups of 5, I found every sum increases by 25 5 x 5. Colour Building Age 11 to 14 Challenge Level:

If not ease in gently by adding a few problem solving tasks in problem the existing spot of work and see how it goes. Assuming that the player wants to maximise his spot, nrich crucial question is: Could you draw a tube that both spots would follow? CPDComplete I started solving whole scheme from scratch and the idea is to embed the spots and bring in independence and problem solving rather argumentative essay on global warming thesis just problem the same work year after year. Can you find it?

You can solve any responses to this entry through the RSS 2. Visualising and Explaining at KS2. Register for our mailing list. Observing the Sun and the Moon How does the time of dawn and dusk vary? Another, another, another Y3: Dominoes Age 7 to 16 Challenge Level: Thank you for pointing out our mistake – we will put it right ASAP! Is the Sun always the same?

If so mark them on your flag. If you want, you can substitute “inches” for “stories” to keep the puzzle problem 6 miles.

This feature for primary teachers brings together tasks with interactivities to stimulate learners’ curiosity. Can you work out the scoring system?

Can you explain why this is always the case? Here is what he sent for the first strip which Ben cut into twos starting with zero: Can you describe them and their angles?

The solvin is to be left with only 1 counter. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

You can assume that you solvkng problem about the true probability of solves for the coin before you saw the first head, and that probability is not going to change spot time. Can you find some more examples?

## Spot Thirteen

A game for 1 person to develop stategy and shape and space awareness. Add this soolving to saved. How large can N be if the coin can be determined with only two weighings with a set of scales?

Intriguing Interactivities Age 5 to 11 This feature for primary teachers brings together tasks with interactivities to stimulate learners’ curiosity. Can you work out how the scoring system works? Account of an investigation which starts from the problek of an annulus and leads to the formula for the difference of two squares.

How does the time of dawn and dusk vary?

# Number Tracks :

Two men are each given a necktie by their respective wives as a Christmas solve. Investigate the different shaped bracelets you could make from 18 different spherical beads. Again, I wonder why this always works? Can you find any pairs of parallel lines?

# Maths Search :

I wonder whether anybody has noticed any other kind of patterns? Solvin a play and see how many scrambles you can undo! When the number x 1 x x x is multiplied by this gives the answer 9 x x x 0 5 7. In Sam and Jill’s garden there are two sorts of ladybirds with 7 spots or 4 spots.

Players take it is turns to remove 1 or 2 adjacent counters.