450 lesson drafts and nine original starter guides. Explore number relationships, fractions, sorting, patterns, shapes, and more. Try three complete free sample lessons. A paid adult account opens all teaching guides, printable PDFs, and learning tools.
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Find a starting position from a known ending place and return movement. Explore a model, explain the relationship, and try it with physical materials.
Locate a whole number by counting equal spaces. Explore a model, explain the relationship, and try it with physical materials.
Identify the numbers directly before and after a target. Explore a model, explain the relationship, and try it with physical materials.
Compare adjacent quantities using position. Explore a model, explain the relationship, and try it with physical materials.
Justify a midpoint by equal numbers of spaces. Explore a model, explain the relationship, and try it with physical materials.
Correct the error of counting zero as a first movement. Explore a model, explain the relationship, and try it with physical materials.
Count the intervals between two marked locations. Explore a model, explain the relationship, and try it with physical materials.
Connect subtraction with movement back toward zero. Explore a model, explain the relationship, and try it with physical materials.
Verify a position using its distances from the endpoints. Explore a model, explain the relationship, and try it with physical materials.
Connect a concrete collection to a location on an ordered scale. Explore a model, explain the relationship, and try it with physical materials.
Reason backward from a known endpoint to the beginning of a journey. Explore a model, explain the relationship, and try it with physical materials.
Use endpoints and interval size to locate a target. Explore a model, explain the relationship, and try it with physical materials.