Glow Math & Logic · Lesson 05
Split a part to see the whole
Explain an equivalent three-addend representation. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomThree subjects. One classroom. · Open lesson previews
Reading and math
lesson previews.
Explore 582 lessons and nine original starter guides across Math Facts, Sight Words, and Math & Logic. 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
Browse 70 topic and grade collections
591 resources to explore
Showing 157–168
Glow Math & Logic · Lesson 06
Balance two lengths
Justify compensation by tracking the transferred unit. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 07
Hidden track, visible track
Connect an unknown-part story to subtraction. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 08
Units or pieces?
Critique an incorrect counting unit with a labeled model. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 09
Equal rods and repeated addition
Describe repeated equal parts using an addition sentence. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 10
Find them all, without repeats
Use a systematic list to justify completeness. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 01
Efficient addition with rods
Explain a strategy for combining two lengths within twenty. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsDiscover
PDF · Paid classroomGlow Math & Logic · Lesson 02
Use a known sum
Derive a related sum from a one-unit change. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsDiscover
PDF · Paid classroomGlow Math & Logic · Lesson 03
Equivalent equations
Justify equality between two expressions using the same units. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsDiscover
PDF · Paid classroomGlow Math & Logic · Lesson 04
Unknown part, known whole
Connect missing-addend and subtraction statements. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 05
Change the grouping, keep the sum
Show why decomposing an addend leaves the total unchanged. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 06
Compensation detective
Track one unit moved between addends and defend equivalence. Explore a model, explain the relationship, and try it with physical materials.
Number TrainsConnect
PDF · Paid classroom