Sort six Christmas-room objects by two different rules
Gather six familiar things, choose a clear rule and make two groups. Then change the rule and see which object moves.
Six things from around the room are enough for a small Christmas sorting game. Use a mitten, a scarf, a fabric soft toy, a plain wooden block, a closed book and a paper card. Put them on a clear table. Choose ordinary items you can handle, without loose small parts or a precious ornament that might break.
Say the first rule before moving anything
Start with two groups: things made mainly from cloth and things that are not. A mitten, scarf and fabric soft toy go together. The wooden block, book and paper card form the other group. Leave a gap between the groups so their edges are clear.
Let the child place one object at a time. Ask what makes it fit that group, and point to the actual material rather than its colour. If your toy has a hard body with only a small fabric accessory, choose a different fabric toy or explain that it is a mixed item. The rule should describe the objects you really have, not force them into an example that does not fit.
Change to a rule about use
Bring all six things back to the middle. This time sort things people wear as winter clothing and things they do not. The mitten and scarf stay together in the clothing group. The soft toy, block, book and card belong in the other group. A tiny scarf on the toy does not turn the whole toy into clothing for a person.
Compare the two arrangements. The soft toy moved because the question changed from what it is made of to how people use it. It was not placed wrongly the first time. Ask the child to name that changed question, or say it yourself if explaining the rule feels difficult.
Keep a third rule optional
You can stop after those two rounds. If you both want another, choose a rule that the actual six objects make easy to check. For example, a picture on the surface may separate your plain block from an illustrated card, but first look at the items: not every book or card has a visible picture.
Agree on what to do with an uncertain object before sorting. You can set it aside and discuss it, rather than changing the rule halfway through to make every choice appear correct. Return all six things to their usual places at the end. Two clear arrangements and one object that changes groups give the game a complete ending.
Six objects we actually have: First rule: mainly cloth or not: Second rule: winter clothing people wear or not: Object that moved when the rule changed: All six things returned to their places:
