Sample Materials
Browse sample lesson materials built from sets of student work. We're in Beta preparing to launch Co-Teacher with a select group of schools for the 2026-2027 school year.
Bikes & Trikes: The Pairing Strategy
Students compare two approaches to splitting 30 wheels — one that halved the total and one that used the pairing strategy — and discover that different values mean you can't just divide in half.
Clean Communities: Evidence vs. Argument
Students compare two body paragraphs — one that drops evidence without explaining it and one that elaborates on what the evidence means — and discover that a strong argument explains WHY the evidence matters.
Operations: Double Before You Add
Students compare two approaches to "Double 55 then add 8" — one that executes both steps and one that skips the doubling — and discover that each step uses the answer from the step before it.
Astronaut Stories: Weaving Source Details
Students compare two astronaut narratives — one that weaves facts into character experiences and one that lists them like a report — and discover that strong writers make their characters live the facts.