leitmotif
Member
Oh given that age range you gotta keep it simple and therein lies the challenge.
By limit number entry to 3 do you mean 3 decimal places ie 1,000 (they will not grasp this large a number)
OR entering 3 different values ie 1 + 2 + 3.
I think you are going to have to rely on more graphics ie display both the number (assume 3) and some symbol say apples (3 of em)
Next line would be say two and would show two apples
Next line would be subtract yielding 1 and would show only one apple.
I think you would be a lot better off using a computer and some canned software designed to teaching kids. PLC is too "engineery" ?? to deal with kids their short attention spans, their need for both graphics and sound.
Dan Bentler
By limit number entry to 3 do you mean 3 decimal places ie 1,000 (they will not grasp this large a number)
OR entering 3 different values ie 1 + 2 + 3.
I think you are going to have to rely on more graphics ie display both the number (assume 3) and some symbol say apples (3 of em)
Next line would be say two and would show two apples
Next line would be subtract yielding 1 and would show only one apple.
I think you would be a lot better off using a computer and some canned software designed to teaching kids. PLC is too "engineery" ?? to deal with kids their short attention spans, their need for both graphics and sound.
Dan Bentler