Using Picture-Perfect STEM Lessons: K-2: Using Children’s Books to Inspires STEM Learning in your classroom is easier than ever! NSTA’s ClassPacks, each sufficient for a class of 28 students, are lesson-specific collections of materials—an unmatched time-saver and a great deal. This ClassPack for the book chapter “Crayons” in Picture-Perfect STEM Lessons: K-2: Using Children’s Books to Inspires STEM includes:2 Crayons-24pk, 28 Silicone muffin cups, 3 Small aluminum pans, 1 can Nonstick spray