Experiments

Guided virtual science experiments for Classes 6–10. Free experiments need no account.

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2 experiments found

Technology 2 experiments

Digital concepts 1 experiment

Binary numbers: how a computer counts with bulbs Class 7 · 10 min · Beginner You can also explore this on the lab bench New Free with an account

New Free with an account Class 7 Technology Beginner Lab bench

Binary numbers: how a computer counts with bulbs

A computer stores numbers as bits that are either on (1) or off (0); each bit is worth twice the one to its right, and the number is the sum of the bits that are on

Four bulbs are worth 8, 4, 2 and 1. Switch them on and off to make numbers, and find out how a computer stores every number with just ones and zeros.

Topic
Digital concepts

Estimated time
About 10 min

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Digital safety 1 experiment

Strong passwords: how long to guess? Class 7 · 10 min · Beginner You can also explore this on the lab bench New Premium

New Premium Class 7 Technology Beginner Lab bench

Strong passwords: how long to guess?

A password is safer when it is long and mixes letters, digits and symbols, because the number of possible passwords to try grows enormously

A computer tries a million passwords every second. Make a password longer, add letters and symbols, and see how long it would take the computer to try them all.

Topic
Digital safety

Estimated time
About 10 min

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