The divided water tank
Make the tank’s parts finer: the water stays put while the fraction’s name changes. See equivalent fractions.
Coins and dice: probability
Toss a coin or roll dice, up to 100,000 times: how does experimental probability approach the theoretical one? See the law of large numbers.
In the learning section below the figure, predict, try, complete the tasks and check yourself with short questions.
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The gearbox
Change the number of teeth: teeth and turns are inversely proportional, and their product stays the same.
Exponential growth: the lily pond
If the leaves double every day, on which day is the pond half full? Compare linear, exponential and logistic growth side by side.