Free STEM Lesson Plans for K–5
Browse free STEM lesson plans for kindergarten through grade 5. Filter by subject, grade, and topic. Download instantly — no sign-up required.
Volcano Eruption Chemistry
Students mix baking soda and vinegar to create a chemical reaction, learning about acids, bases, and gas production.
Build a Paper Bridge
Design and construct a paper bridge strong enough to hold coins — exploring load, tension, and structural design.
Coding with Scratch Jr.
Introduce young learners to block-based coding by animating a simple story using Scratch Jr.
Measurement Scavenger Hunt
Students measure everyday objects around the classroom using non-standard and standard units.
Plant Life Cycle Journal
Grow bean sprouts and document observations in a science journal over two weeks.
Rube Goldberg Machine
Teams design a chain-reaction machine using household materials to complete a simple task.
Fraction Pizza Party
Students create paper pizzas divided into equal slices to explore fractions, equivalence, and part-whole relationships.
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