Explain a covered part
Represent a subtraction situation without treating hidden units as absent. Explore a model, explain the relationship, and try it with physical materials.
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.
Choose by readiness and prior teaching. Grade labels are starting points. How to choose a starting point
Showing 37–48
Represent a subtraction situation without treating hidden units as absent. Explore a model, explain the relationship, and try it with physical materials.
Explain why piece count is not a measure of length. Explore a model, explain the relationship, and try it with physical materials.
Connect repeated addition to a grouping description. Explore a model, explain the relationship, and try it with physical materials.
Justify a stopping point in a systematic decomposition list. Explore a model, explain the relationship, and try it with physical materials.
Connect the number of groups, group size, and product. Explore a model, explain the relationship, and try it with physical materials.
Use an additive model to explain equivalent expressions. Explore a model, explain the relationship, and try it with physical materials.
Reason about an unknown part of a whole within the rod capacity. Explore a model, explain the relationship, and try it with physical materials.
Show how breaking one group changes a calculation but not its value. Explore a model, explain the relationship, and try it with physical materials.
Use a preserved total to justify a general additive relationship. Explore a model, explain the relationship, and try it with physical materials.
Distinguish changing one unit from adding an entire equal group. Explore a model, explain the relationship, and try it with physical materials.
Construct a counterargument that names the measured unit. Explore a model, explain the relationship, and try it with physical materials.
Interpret the same construction as joining and separating quantities. Explore a model, explain the relationship, and try it with physical materials.