Instruction text

Here you can match the number of tens and units with the number on the counter. Get the pieces from the collection on the right, and don’t forget to press OK .

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There is a list of 20 pre-established numbers which the program will randomly choose from.
The LIST: 57, 42, 60, 19, 23, 27, 33, 58, 80, 74, 66, 91, 38, 71, 84, 41, 29, 67, 47, 73.
NOTE: the list will not have numbers that take too long to count (i.e., 98)

The user drags the tens and units from the unit collection on the right into their appropriate areas, clicking OK when they think they’ve matched the number shown on the counter. If they get it wrong a second time, an animation (‘counting animation’—different from the counting animation in Discover 3) brings across the correct number of units and tens, counting them.

The Speaker next to the counter will be able to narrate the number. Filenames for each number are located in the numbers script. The voice will ultimately be mechanical-sounding.

The Next Screen button only flashes after the user has entered a correct response. If the user has responded incorrectly for the 2^nd time, then no buttons flash; they can decide on their own whether to select Start Again or Next Screen.

The reset lever is the equivalent of arriving fresh at the screen - the counter is set to a new random number, and the areas will empty.

Simple mistakes (don’t count as wrong answer)

If:

The child places no pieces and presses OK.

Voice:

To make the number shown on the counter, take tens and units from the collection and put them in the tens and units trays.

If:

The child tries to place a ten piece in the unit area.

Then:

The ten piece that the user is trying to place will snap back to the pile on the right.

Voice:

That’s a ten and it belongs in the tens tray – not the units tray!

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If:

The child tries to place a unit piece in the ten area.

Then:

The unit piece that the user is trying to place will snap back to the pile on the right.

Voice:

That’s a unit and it belongs in the units tray – not the tens tray!

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Correct answer

If:

The child selects the correct pieces.

Voice:

Nicely done. Press the speaker to hear the number.

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1^st wrong answers

If:

The child selects the 'opposite' pieces. (e.g., 5 units and 7 tens, instead of 7 units and 5 tens)

Voice:

You’ve mixed up the tens and units. Try to set it right by adding or removing pieces.

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If:

The child places the correct number of tens but the wrong number of units.

Voice:

You’ve got the right number of tens, but the units don’t match.
Try to fix it by adding or removing pieces.

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If:

The child places the correct number of units but the wrong number of tens.

Voice:

You’ve got the right number of units, but the tens don’t match.
Try to fix it by adding or removing pieces.

If:

The child matches nothing.

Voice:

Those pieces don't match the number. Remember: the number of unit and ten pieces should match the numbers on the counter.
Try to set it right by adding or removing pieces.

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