You can teach your students the hand trick in conjunction with these facts about multiplying 9s.

Teach students the importance of abstract nouns, or things you can't actually see or touch, and how to incorporate them into writing to demonstrate the correct tone.

The punctuation mark with which you end a sentence can change the tone of your statement completely. Teach your third grader how to identify these different tones and their appropriate uses with these exercises made just for them.