Doubling and Symmetry

we worked on doubling and symmetry.
 I explained first off that paintings have matching dots on each of the wing cases, with the same number and the position, so we were going to work on doubling the number of a single wing case and then using symmetry to mirror the dots from one wing case to the next.
Using previous knowledge – he’s worked on doubling numbers 1 to 100 I laid out a number of dots on one wing case and asked him to count and predict the number of dots that the painting would have once we doubled the number on the single wing case.