"Avoid the void, for they will fill it." ~ Dr. Anita Archer
If the teacher does not have lengthy enough lesson plans, you'll want to have a bank of ideas/activities that you can use to keep the students busy and engaged.
Ideas from ESU 9 Substitute Teacher Training:
Getting to know you…What do you think is the most important quality a person can have?
Grow gratitude…What are some things that are easy to complain about, but we’re actually lucky to have? For example, rainy days help gardens grow and give animals water to drink.
Develop imagination…What color is the happiest color? What makes it happy?
Develop empathy…Did you have a chance to be kind to anyone today?
Develop mental strength…What feeling do you think is most uncomfortable? Embarrassment, anger, fear, or something else?
Develop ambition…If you could achieve any goal, however impossible it seems, what would it be?
You start, students guess using words/places/people from their school/city/classroom. (idea from ESU 9 Sub Teacher Training)
Hand students a blank piece of paper and have them draw a picture for you of their family, their favorite activity, their favorite food, what they're going to do after school, etc. Take turns sharing and talking about their drawings.
Keep plenty of read aloud books in your backpack to pull out when needed. Kids of all ages love to read to. For older kids, you can take books of poems or short picture books that are appropriate for older students.
If there is a word wall in the room, have the kids help recall or spell words on the word wall with you using these word wall chants.
Super Substitute Teacher Fillers