Glow Math & Logic · Lesson 01
Fractions are numbers on a line
Locate a fraction by iterating the displayed unit fraction. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsDiscover
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Grade 3 Number Line Trails lessons
Ten Grade 3 lesson drafts for exploring number line trails through models, conversation, and hands-on practice. Try three complete free sample lessons. A paid adult account opens all teaching guides, printable PDFs, and learning tools.
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Glow Math & Logic · Lesson 02
Neighbors in fractional units
Name adjacent marked fractions on the same partition. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsDiscover
PDF · Paid classroomGlow Math & Logic · Lesson 03
Compare neighboring fractions
Use a common whole and common denominator to justify order. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsDiscover
PDF · Paid classroomGlow Math & Logic · Lesson 04
Halfway is a relationship
Justify one half by equal distances to zero and one. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 05
The zero-tick trap
Diagnose an interval-counting error in fractional placement. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 06
Distance between fractional points
Measure a gap in unit-fraction intervals. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 07
Longer line, same fraction
Distinguish fractional value from the paper line's physical length. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsConnect
PDF · Paid classroomGlow Math & Logic · Lesson 08
Refine the partition
Justify equivalent fractions without moving the point. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 09
Check against both endpoints
Use complementary fractional distances to verify a position. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsStretch
PDF · Paid classroomGlow Math & Logic · Lesson 10
The tick number is not the value
Distinguish a count of unit-fraction intervals from a count of whole units. Explore a model, explain the relationship, and try it with physical materials.
Number Line TrailsStretch
PDF · Paid classroom