Mon Prof Augmenté
Two-State Columns
Open to everyone until Thursday, October 1
To keep it, print it while it is open.
A number can be shown with columns that double at each step: 1, 2, 4, 8. Each column is either on with balls or off, and the on columns add together.
In the picture
- The single glowing ball: one unit in the 1s place.
- The pair of glowing balls: two units in the 2s place.
- The unlit bulb beside the third column: the 4s place is off.
- The unlit bulb beside the fourth column: the 8s place is off.
Examples
- Light switches that are either on or off.
- A digital clock using lit and unlit segments.
Key takeaways
- Each column is worth twice the column before it.
- Only the columns that are on are added to make the number.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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