Litmus Laboratory

A multidisciplinary collection of interactive notebook reference posters, graphic organizers, and concept webs for elementary students across reading, science, and core subjects.

An introductory STEM lesson exploring diverse engineering fields, the engineering design loop, and the real-world structures and machines engineers create.

A teacher answer key and instructional reference for the Word Bank Fill-In activity, featuring solutions for all 7 clues, field explanations, and classroom extension ideas.

A two-part foundational science sequence mastering significant figures, measurement uncertainty, scientific notation, and mathematical operations across real-world scientific scales.

A hands-on elementary life science lesson focused on classifying living organisms into major groups based on traits, structures, and backbones using visual graphic organizers.

A print-ready student worksheet featuring a word bank and seven full-width clue cards with extra-wide handwriting answer boxes for elementary students.

A two-day 7th grade science sequence mastering the core scientific practice of separating empirical observations from inferences. Students examine mystery fossil tracks on Day 1 and conduct a hands-on chemical mystery powder investigation on Day 2.

A middle school science lesson exploring how four distinct medical conditions—pancreatic injury, asthma, diabetes, and anemia—interfere with the body's delivery of glucose and oxygen to cells, disrupting cellular respiration and metabolic energy production.

A vibrant and engaging 9-slide presentation introducing young learners to different types of engineers and the real-world creations they build. Features colorful kid-friendly vector clipart, clear examples, and key STEM fields.

A comprehensive multi-day chemistry sequence focused on mastering the swap-and-drop (criss-cross) method for writing and balancing ionic chemical formulas. Students progress from simple binary compounds to polyatomic groups and multivalent transition metals with structured modeling and guided practice.

A 5th-grade vocabulary unit exploring core science investigation and ecosystem concepts, from systems and parts to forest regrowth and observation.

A hands-on science concept web and interactive notebook organizer for 3rd graders to classify living things into plants (flowering and non-flowering) and animals (vertebrates and invertebrates) with dedicated student recording spaces.