Ming from Agents of Speech uses a toy car slide to teach kids to ask questions and use words. She models color names (yellow, orange, blue, green), prompts "which?" and "how many?", and gets children to say "go" when releasing the cars.
Chapters
Another question you can ask which color? Or blue car, green card. The which question is nice. You can actually ask how many? Once you got to a point where you've introduced four cars. Now you can ask how many do you want? Or how many is there? Four. How many is there? You can take one away. Three, two or one. Let's visit the sequence again with four cars. Now let's say that they already got to this point where you've already taught them to use four. How many do you want? Oh, four. Which one first? Okay, yellow. Yellow car. Here you go. Put yellow car. Alright, next one. Which one do you want? Oh, orange car. Alright, next one. A blue car. All right, so you hold it for him here. And then last one, green car. Great. Are you ready? 1, 2, 3. And you stop and you see if they will say go themselves. 1, 2, 3, go, go, go, go, go, go. Like that.