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Public learning track
Lines, Rays, Line Segments, and Intersections
3rd Grade · Track 149 of 698 · 8 lessons
8 lessons
Goal
Identify and draw points, lines, line segments, rays, horizontal, vertical, oblique, parallel, and perpendicular lines, and understand paths between points.
Featured Diagrams
Points, Lines, Line Segments, and Rays
Public learning track
Mathematical Problem Solving and Strategic Reasoning
3rd Grade · Track 150 of 698 · 8 lessons
8 lessons
Goal
Master a four-step problem-solving model by analyzing given information, selecting appropriate tools and models, justifying mathematical reasoning with precise vocabulary, and evaluating solutions for real-world reasonableness.
Featured Diagrams
Finding What You Know and What You Need in Word Problems
Public learning track
Place Value Structure and Representation to 100,000
3rd Grade · Track 151 of 698 · 8 lessons
8 lessons
Goal
Read, write, compose, decompose, and represent whole numbers up to 100,000 in standard, word, and expanded forms while explaining positional value.
Featured Diagrams
Understanding Thousands Place Value and Blocks
Public learning track
Time Measurement, Clocks, and Unit Conversions
3rd Grade · Track 152 of 698 · 7 lessons
7 lessons
Goal
Read analogue and digital clocks across 12-hour, 24-hour, and Roman numeral formats, and convert fluently between units of time.
Featured Diagrams
Reading Clocks to the Nearest Minute in 12-Hour Time
Public learning track
Understanding Fractions of Wholes and Sets
3rd Grade · Track 153 of 698 · 8 lessons
8 lessons
Goal
Build, name, and represent unit and non-unit fractions using area models, length strips, and discrete sets of objects.
Featured Diagrams
Partitioning a Whole Object into Equal Parts
Public learning track
Understanding Multiplication Models and Comparisons
3rd Grade · Track 154 of 698 · 8 lessons
8 lessons
Goal
Understand multiplication conceptually through equal groups, arrays, number lines, repeated addition, and multiplicative comparison.
Featured Diagrams
Multiplication as Equal Groups
Public learning track
Angles as Turns, Classification, and Protractor Measurement
3rd Grade · Track 155 of 698 · 9 lessons
9 lessons
Goal
Understand angles as geometric turns, classify acute, right, obtuse, and straight angles, and measure and draw benchmark angles using protractors.
Featured Diagrams
Exploring Angles as Turns: Whole, Half, and Quarter Turns
Public learning track
Elapsed Time Intervals and Duration Problems
3rd Grade · Track 156 of 698 · 6 lessons
6 lessons
Goal
Calculate elapsed time intervals and determine start and end times using open number lines and timeline models.
Featured Diagrams
Finding Elapsed Time Forward Using an Open Number Line
Public learning track
Fractions on the Number Line and Beyond One
3rd Grade · Track 157 of 698 · 7 lessons
7 lessons
Goal
Locate, identify, and measure fractions as distances from zero on a number line, including tenths and intervals beyond one.
Featured Diagrams
Representing Unit Fractions on Number Lines
Public learning track
Mathematical Games, Logic, and Strategic Inquiry
3rd Grade · Track 158 of 698 · 6 lessons
6 lessons
Goal
Develop strategic deductive reasoning, spatial foresight, and problem-solving flexibility through structured mathematical games and logic puzzles.
Featured Diagrams
Coordinate Grids and Piece Values in Chess Math