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A game needs to count mangoes. Blocks you know move a sprite, repeat, or ask. A sprite is a character on the screen. None keeps a number.

What this track covers

• A named box — a place to keep one number.
• Changing it — read the box, then write a new number.
• Waiting — a group of blocks that runs when a tap happens.
• Nested blocks — one block inside another.
• Planning first — write the steps of a game before you build it.