A popular logic test, used even in a Die Hard movie! Getting the first 3 gallons is simple enough.  But the trick is then to be able to measure 1 more gallon - which you do by emptying 5 gallon in to 3 gallon, twice, and so there will be 1 gallon left in 5 gallon jug.

1) Fill the 3 gallon jug up first. How much water do you have?

2) Now how can you get just 1 more gallon?

3) What happens if you empty the 3 gallon jug into the 5 gallon jug? (twice)

This activity suggests a seemingly crazy idea, but asks your child to find all the arguments to support it. They will have to dig deep but see if they can make a reasonable case for it (eg virtual meetings possible, never catch flu from others, make friends in other countries) since it is a great debating skill if they can. Use any other crazy suggestion that comes to mind instead / as well.

1) There must be an advantage to this. What is it?

2) What are the disadvantages and how can you counter them?

3) Which people would be most supportive of your argument?

Explain the classic scenario of being stuck on a desert island but can only bring one thing with you. Encourage your child to brainstorm a list and consider pros and cons, before selecting one. Your discussion can be as practical (bring food) or fun (bring games) as you want!

1) There is so much to choose from. Let's make a list first before deciding?

2) What are the pros and cons to having that, compared to other things?

3) What do you think I would chose and why?