Bubble has been confused about how two colours that look different can still be the same, so we've been trying to exlain to her about light and dark. Today we did an activity that would show her the difference visually to try and help demonstrate the concept. I collected a box of small objects that were half dark blue and half light, then got two peices of paper and wrote the headings 'light' and 'dark' on the tops. I sorted the fist two objects so that Bbble could see the difference, and then she did the rest. She actually picked up the idea straight away and we ended up playing the game over and over with different colours.