Protocol Ideas for 1.4

My protocol for this lesson was similar to what many of my students did. Start with one symbol and then list all the combinations. Then start with the next simple and list all combination. Then start with the 3rd symbol and list all combination. Does order matter?

Yes, since we are trying to develop a number system. A particular combination represents a number. A combination can represent one number only. To get numbers in a sequence (least to greatest), the order will matter.