Tap Space or the big button on every click. After 4 count-in clicks, keep tapping for 12 more.
Space, J, F or tapping the pond all make the frog hop.
Students read the rhythm on screen and tap each note to make the frog hop. Each hop lasts as long as the note, so they have to hold the longer notes, and on a rest the turtle carries them. The eight worlds go from ta and ti-ti up to tam-ti and tim-ka, in 2/4, 3/4 or 4/4.
Run the timing check in Settings before students start, especially with Bluetooth speakers or headphones. Space, J, F or tapping the screen all work, so it's fine on laptops or tablets.