You mention geometry. There are some excellent apps like https://www.euclidea.xyz/ https://www.euclidea.xyz/ for that, much better than pencil and paper. (I don

You mention geometry. There are some excellent apps like https://www.euclidea.xyz/ https://www.euclidea.xyz/ for that, much better than pencil and paper. (I don't know about any outcomes with kids, just my own experience. But if I had kids I would totally want to see what they made of it.) But in general, when I got an iPad Pro this year and looked for science/math toys to run on it, I was disappointed. There are a lot more didactic educational apps than more imaginative uses of the new medium. Some worth mentioning: * Earth: a primer * Several apps and games to learn basic programming Scratch-style * Khan Academy * Desmos * Some interactive books from e.g. the Exploratorium * XSection from the same company as Euclidea * A digital-logic game whose name I forget * Kaleidopaint * EveryCircuit * An audio spectrum viewer I'd like to hear of more to try.