Which of the diagrams above show:
a)The net of a cube,
b)The net of a dice (opposite numbers adding up to seven)?

## A Mathematics Lesson Starter Of The Day

Topics: Starter | Shape (3D) | Number | Problem Solving

• Scarlett Rowe, Lawnswood School Leeds
•
• A very good source of maths activity! I recomend it to all the teachers out there.
• The Best Maths Class 7cd/M2, King Alfred's College Oxfordshire
•
• Molly, Natasha, Patrick, Ryan, Jordii, one other, Louis got it right. Everyone else got a headache ! Really good challenge.
• Mr Kel, Fulford School
•
• Starter could easily be developed into accurate construction of the nets of cubes/dices using compasses and rulers and actually having a go at making the cubes/dices.
• Mr Edwards, Sheredes Set 2 Year 7
•
• Some of the group found this quite challenging, and others thought it was quite easy. Jack paris said 'a very good challenge and a good way to help with your nets'. Sydney said 'the cube part was easy but the die part was quite challenging. 'Sam said 'it was a brainteasing challenge but it was fun.'.
• Mr Hill, Top Maths Group - BSCA
•
• Mr Hill's top maths group did really well - 6 of them got 100%.
• Mrs. Boussouara's Math Class, Holyrood Secondary
•
• This game was a challenge , it was hard because we only had ten seconds but a few people got 100%, including me (Jon Wallace 1.13J).

How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.

Previous Day | This starter is for 25 March | Next Day

Notes for Teacher: The five questions will show on an infinite loop (if you have Flash installed) so that it can be playing as the students enter the room. If there is any doubt about a net you can click the pause button then print out the net for cutting out and folding.

There is a printable worksheet to go with this activity.

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Here is the URL which will take them to the Dice Net Challenge.

Transum.org/go/?to=dice

Here is the URL which will take them to the Net Or Not activity.

Transum.org/go/?to=netnot

## Extension

Of the nets above that produced dice, which were right-handed and which were left-handed?

 /* Thanks to Amit Sheen https://css-tricks.com/how-css-perspective-works/ for the CSS perspective lesson */ .container { width: 400px; height: 400px; border: 2px solid grey; border-radius: 4px; display: flex; justify-content: center; align-items: center; perspective: 800px; perspective-origin: top left; } .cube { position: relative; width: 200px; height: 200px; transform-style: preserve-3d; animation: cubeRotate 40s linear infinite; } @keyframes cubeRotate { from { transform: rotateY(0deg) rotateX(720deg) rotateZ(0deg); } to { transform: rotateY(360deg) rotateX(0deg) rotateZ(360deg); } } .side { position: absolute; width: 100%; height: 100%; opacity: 0.9; border: 2px solid black; box-shadow:0px 0px 3px 2px grey inset; } .front { background-color: #d50000; } .back { background-color: #aa00ff; } .left { background-color: #304ffe; } .right { background-color: #0091ea; } .top { background-color: #00bfa5; } .bottom { background-color: #64dd17; } .front { background-color: #d50000; transform: translateZ(100px); } .back { background-color: #aa00ff; transform: translateZ(-100px); } .left { background-color: #304ffe; transform: rotateY(90deg) translateZ(100px); } .right { background-color: #0091ea; transform: rotateY(-90deg) translateZ(100px); } .top { background-color: #00Bfa5; transform: rotateX(90deg) translateZ(100px); } .bottom { background-color: #64dd17; transform: rotateX(-90deg) translateZ(100px); } .dot { position:absolute; width:50px; height:50px; border-radius:50%; background-color:black; } /* 2 5 3 1 6 4 7 */ .dot1 {left:75px;top:75px;} .dot2 {left:15px;top:15px;} .dot3 {left:15px;top:75px;} .dot4 {left:15px;bottom:15px;} .dot5 {right:15px;top:15px;} .dot6 {right:15px;top:75px;} .dot7 {right:15px;bottom:15px;} Left-handed Dice /* Thanks to Amit Sheen https://css-tricks.com/how-css-perspective-works/ for the CSS perspective lesson */ .container { width: 400px; height: 400px; border: 2px solid grey; border-radius: 4px; display: flex; justify-content: center; align-items: center; perspective: 800px; perspective-origin: top left; } .cube { position: relative; width: 200px; height: 200px; transform-style: preserve-3d; animation: cubeRotate 40s linear infinite; } @keyframes cubeRotate { from { transform: rotateY(0deg) rotateX(720deg) rotateZ(0deg); } to { transform: rotateY(360deg) rotateX(0deg) rotateZ(360deg); } } .side { position: absolute; width: 100%; height: 100%; opacity: 0.9; border: 2px solid black; box-shadow:0px 0px 3px 2px grey inset; } .front { background-color: #d50000; } .back { background-color: #aa00ff; } .left { background-color: #304ffe; } .right { background-color: #0091ea; } .top { background-color: #00bfa5; } .bottom { background-color: #64dd17; } .front { background-color: #d50000; transform: translateZ(100px); } .back { background-color: #aa00ff; transform: translateZ(-100px); } .left { background-color: #304ffe; transform: rotateY(90deg) translateZ(100px); } .right { background-color: #0091ea; transform: rotateY(-90deg) translateZ(100px); } .top { background-color: #00Bfa5; transform: rotateX(90deg) translateZ(100px); } .bottom { background-color: #64dd17; transform: rotateX(-90deg) translateZ(100px); } .dot { position:absolute; width:50px; height:50px; border-radius:50%; background-color:black; } /* 2 5 3 1 6 4 7 */ .dot1 {left:75px;top:75px;} .dot2 {left:15px;top:15px;} .dot3 {left:15px;top:75px;} .dot4 {left:15px;bottom:15px;} .dot5 {right:15px;top:15px;} .dot6 {right:15px;top:75px;} .dot7 {right:15px;bottom:15px;} Right-handed Dice

## Dice and Spinners

Computer generated random numbers for games and probability experiments

## Snail Race

A race between 12 snails. Which snail is most likely to win? This is the students' version of the race simulation.

## Dice Bingo

Choose your own numbers for your bingo card. The caller uses two dice and adds the numbers together.

## Dice Investigation

Throw two dice and multiply the scores. Investigate the different products you can obtain. What about adding? What about using three dice?

## Dice Net Challenge

Drag the numbers onto the net so that when it is folded to form a cube numbers on opposite faces add up to prime numbers.

## DiceGebra

An online board game for two players evaluating algebraic equations and inequalities.

## Dump-A-Dice Race

An online board game for two players involving prime and square numbers and making choices.

For Students:

For All: