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Countdown All Around
Countdowns are everywhere! Traffic lights count down for pedestrians. Microwaves count down when heating food. Timers count down for games. Every countdown uses counting backwards!
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Mathematics — Counting Backwards — 10, 9, 8... Blast Off!
Countdowns are everywhere! Traffic lights count down for pedestrians. Microwaves count down when heating food. Timers count down for games. Every countdown uses counting backwards!