LESSON 1 · GOAL

What must be true

Some things must be true, some could be true, and some can’t be. Sort them by testing each one against the facts.

BY THE END

You’ll tell what must be true from what only could be true.

ACTIVITY 1 · BUILD IT

Can you break it?

Move Leo and change what he can do. Keep both facts true. Can you make Sam or Kim wrong?

THE FACTS
  • ✓Everyone in the art club can paint.
  • ✓Ruby is in the art club.
WHAT THEY SAY
  • Sam: ‘So Ruby can paint.’Still true here
  • Kim: ‘So everyone who can paint is in the art club.’Still true here
Tap a name, then tap a place. Or drag it.
YOUR ANSWER

If the facts are true, whose reasoning is correct?

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