This courseware mainly introduces the concept of the number zero. In the counting part, using the song "Five Little Speckled Frogs", it shows the number of frogs decreasing to zero, and reinforces with bugs - counting. A backward - counting game with a rocket - jump at zero is set. In the recognizing - zero part, learners find pictures with zero frogs or bugs. Exercises like picture - number matching and two - player card - pairing games are arranged to strengthen the understanding of zero.

Main Content:
1.Section on Counting with Zero
2.Section on Recognizing Zero

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