How do my students log in?

Go to HappyNumbers.com and click the yellow "I'm a Student" button.

Enter a 9-digit class number without space.
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Click on the image with the student's name, and type the password.

If Happy Letters is also enabled for your class, after logging in, you will be taken to a page where you can choose a course:

To start Math (Happy Numbers), click on the dinosaur Dino.

To start ELA (Happy Letters), click on the dog Alfy.