Learning units
Choose a goal, then follow connected activities from exploration to practice and application. Grade is a starting point: check the prerequisites, course and language level for your learner.
145 learning units
math · pre-k
Count and Match Small Sets
Count each object once and state the total. Connect a numeral to a quantity.
6 connected activities
Open the sequence →math · kindergarten
Count and Organize Within Twenty
Count each object once and state the total. Connect a numeral to a quantity.
4 connected activities
Open the sequence →math · pre-k
Find and Build Shapes
Recognize circles, triangles, squares and rectangles.
4 connected activities
Open the sequence →math · pre-k
What Comes Next
Recognize and extend repeating patterns.
4 connected activities
Open the sequence →math · kindergarten
Addition Parts Within 10
Represent a total as two parts. Connect pictures, stories and addition equations.
6 connected activities
Open the sequence →math · Grade 1
Addition Parts Within 20
Represent a total as two parts. Connect pictures, stories and addition equations.
6 connected activities
Open the sequence →math · kindergarten
Compare Quantities Within Ten
Compare two collections using counted quantities.
4 connected activities
Open the sequence →math · kindergarten
Make Ten in Different Ways
Find the missing part of a total of ten.
4 connected activities
Open the sequence →math · Grade 1
Build Numbers With Tens and Ones
Represent two-digit numbers as tens and ones.
4 connected activities
Open the sequence →math · Grade 1
Subtraction Stories and Missing Parts
Represent taking away and finding a missing part within twenty.
4 connected activities
Open the sequence →math · Grade 1
Use a Number Line
Represent addition and subtraction with directed jumps.
4 connected activities
Open the sequence →math · Grade 1
Measure With Equal Units
Measure length using equal units without gaps.
4 connected activities
Open the sequence →math · Grade 2
Understand Regrouping in Addition
Exchange ten ones for one ten when adding two-digit numbers.
4 connected activities
Open the sequence →math · Grade 2
Exchange a Ten to Subtract
Exchange one ten for ten ones in subtraction.
4 connected activities
Open the sequence →math · Grade 2
Count Coins and Plan a Purchase
Count coin values and compare a total with a price.
4 connected activities
Open the sequence →math · Grade 2
Read and Build Three Digit Numbers
Use hundreds, tens and ones to compose and compare numbers.
4 connected activities
Open the sequence →math · Grade 3
Equal Groups Arrays and Multiplication
Represent multiplication using equal groups and arrays.
4 connected activities
Open the sequence →math · Grade 3
Two Meanings of Division
Represent division as equal sharing or counting equal groups.
4 connected activities
Open the sequence →math · Grade 3
Read Fractions of One Whole
Interpret equal parts of one whole and connect fraction representations.
6 connected activities
Open the sequence →math · Grade 4
Equivalent Fractions in Models
Interpret equal parts of one whole and connect fraction representations.
6 connected activities
Open the sequence →math · Grade 3
Area and Perimeter Are Different
Distinguish square units of area from units along a boundary.
4 connected activities
Open the sequence →math · Grade 4
Multiply With Place Value
Use decomposition to explain multi-digit multiplication.
4 connected activities
Open the sequence →math · Grade 4
Reason About Angles
Use right angles and straight angles to find unknown measures.
4 connected activities
Open the sequence →math · Grade 5
Decimals in Tables and Models
Read decimal place values and compare quantities.
4 connected activities
Open the sequence →math · Grade 5
Add Fractions by Matching Units
Use common denominators to add and subtract fractions.
4 connected activities
Open the sequence →math · Grade 5
Volume as Layers of Cubes
Find rectangular prism volume using unit cubes and dimensions.
4 connected activities
Open the sequence →math · Grade 6
Ratio Tables and Unit Rates
Use equivalent ratios and unit rates to solve proportional problems.
4 connected activities
Open the sequence →math · Grade 6
Integer Comparisons and Changes
Interpret signed numbers and changes on a number line.
4 connected activities
Open the sequence →math · Grade 7
Solve Equations and Explain Balance
Solve two-step equations using equivalent operations.
4 connected activities
Open the sequence →math · Grade 7
Sample Spaces and Probability
List equally likely outcomes and interpret probability.
4 connected activities
Open the sequence →math · Grade 8
Connect Tables Graphs and Linear Rules
Connect slope and intercept to tables, graphs and equations.
6 connected activities
Open the sequence →math · Grade 8
Reason With Right Triangle Lengths
Use the Pythagorean relationship for right triangles.
4 connected activities
Open the sequence →math · Grade 9
Factor Solve and Check Quadratics
Use factoring to solve selected quadratic equations.
4 connected activities · Algebra 1
Open the sequence →math · Grade 10
Choose Trigonometric Ratios
Relate sides to a chosen acute angle and use trigonometric ratios.
4 connected activities · Geometry
Open the sequence →math · Grade 11
Exponential Functions and Growth
Interpret exponential rules and distinguish additive from multiplicative change.
4 connected activities · Algebra 2
Open the sequence →math · Grade 12
Limits Values and Rates
Distinguish a limit from a function value in selected examples.
4 connected activities · Calculus
Open the sequence →ela · pre-k
Notice and Match Letters
Recognize letter forms and connect uppercase and lowercase pairs.
4 connected activities
Open the sequence →ela · kindergarten
Short A Words Sentences and Stories
Blend and read short-a CVC words in a short connected text.
6 connected activities
Open the sequence →ela · kindergarten
First Next and Last
Retell a short sequence using order words.
4 connected activities
Open the sequence →ela · Grade 1
Read Retell and Explain
Identify key events and retell a short narrative with relevant details.
4 connected activities
Open the sequence →ela · Grade 1
Make a Complete Sentence
Use capitals, end punctuation and a complete idea.
4 connected activities
Open the sequence →ela · Grade 2
Main Ideas and Supporting Details
Find a main idea and connect details to it.
6 connected activities
Open the sequence →ela · Grade 2
Plan and Improve a Short Story
Organize a narrative with a beginning, event and ending.
4 connected activities
Open the sequence →ela · Grade 3
Facts Opinions and Evidence
Distinguish checkable statements from opinions and support a claim.
4 connected activities
Open the sequence →ela · Grade 3
Write an Explanation Paragraph
Organize a clear explanation using relevant details.
6 connected activities
Open the sequence →ela · Grade 4
Infer From Actions and Details
Support an inference about a character with text details.
4 connected activities
Open the sequence →ela · Grade 4
Build and Revise an Opinion
Support an opinion with relevant reasons and a clear conclusion.
4 connected activities
Open the sequence →ela · Grade 5
Compare Views With Text Evidence
Compare two positions and explain their shared and different reasons.
4 connected activities
Open the sequence →ela · Grade 5
Revise for Focus and Flow
Revise a paragraph for focus, sequence and clear connections.
4 connected activities
Open the sequence →ela · Grade 6
Central Ideas and Text Structure
Explain how details and organization develop a central idea.
4 connected activities
Open the sequence →ela · Grade 7
Claims Evidence and Survey Limits
Evaluate whether evidence supports a claim and identify limitations.
4 connected activities
Open the sequence →ela · Grade 8
Analyze Figurative Language
Explain how figurative language contributes to meaning.
4 connected activities
Open the sequence →ela · Grade 9
Rhetorical Appeals in an Argument
Identify rhetorical choices and evaluate their use of evidence.
4 connected activities
Open the sequence →ela · Grade 10
Develop a Theme Through Choices
Support a theme interpretation with character choices and consequences.
4 connected activities
Open the sequence →ela · Grade 11
Evaluate Qualification and Counterclaims
Analyze how a qualified argument responds to a counterclaim.
4 connected activities
Open the sequence →ela · Grade 12
Synthesize Sources Without Overclaiming
Combine evidence and critique the limits of a thesis.
4 connected activities
Open the sequence →science · pre-k
Observe and Record Weather
Describe visible weather and distinguish an observation from a guess.
4 connected activities
Open the sequence →science · kindergarten
Classify Living and Nonliving Things
Use multiple characteristics to reason about familiar living and nonliving things.
4 connected activities
Open the sequence →science · Grade 1
Plant Parts Have Jobs
Connect roots, stems and leaves with their functions.
4 connected activities
Open the sequence →science · Grade 2
Matter and Changes of State
Distinguish familiar states of matter and describe selected changes.
4 connected activities
Open the sequence →science · Grade 3
A Butterfly Life Cycle
Order the stages of a butterfly life cycle and explain change.
4 connected activities
Open the sequence →science · Grade 4
Explain Water Cycle Processes
Connect evaporation, condensation and precipitation in a simplified water cycle.
4 connected activities
Open the sequence →science · Grade 5
Planet Order and Model Limits
Use planet order and distinguish a model from true scale.
4 connected activities
Open the sequence →science · Grade 6
Earth Layers and Moving Plates
Distinguish Earth’s layers and interpret a plate boundary model.
4 connected activities
Open the sequence →science · Grade 7
Cell Structures and Their Roles
Connect selected cell structures to functions and compare plant and animal cells.
4 connected activities
Open the sequence →science · Grade 8
Interpret Net Force and Acceleration
Use F = ma in a simple constant-mass model.
4 connected activities
Open the sequence →science · Grade 9
Use a Simple Inheritance Model
Interpret a one-gene complete-dominance model without overgeneralizing.
4 connected activities · Biology
Open the sequence →science · Grade 10
Read Reaction Ratios
Use coefficients in a balanced equation to compare mole amounts.
4 connected activities · Chemistry
Open the sequence →science · Grade 11
Read Velocity Data
Calculate and interpret acceleration from a velocity table.
4 connected activities · Physics
Open the sequence →science · Grade 12
Connect Matter and Energy in Cells
Compare simplified photosynthesis and cellular respiration models.
4 connected activities · Biology
Open the sequence →science · Grade 3
Use Data Without Overclaiming
Read a measurement log and separate observations from causal claims.
6 connected activities
Open the sequence →social studies · pre-k
People Help in Different Homes
Identify helpful actions without assuming one family structure.
4 connected activities
Open the sequence →social studies · kindergarten
Helpers in a Community
Connect community roles with services.
4 connected activities
Open the sequence →social studies · Grade 1
Needs Wants and Limited Choices
Distinguish basic needs and wants in a stated context.
4 connected activities
Open the sequence →social studies · Grade 2
Read a Neighborhood Map
Use north, south, east and west to describe a route.
4 connected activities
Open the sequence →social studies · Grade 3
Three Branches and Shared Power
Identify broad roles of the U.S. federal branches and explain shared power.
4 connected activities
Open the sequence →social studies · Grade 4
Read a Timeline and Ask Questions
Use chronology and distinguish order from causation.
4 connected activities
Open the sequence →social studies · Grade 5
Compare Community Rule Proposals
Compare reasons and effects of rules in a fictional community.
4 connected activities
Open the sequence →social studies · Grade 6
Geography and Settlement Choices
Use stated geographic conditions to explain possible settlement choices.
4 connected activities
Open the sequence →social studies · Grade 7
Read a Trade Network
Explain exchange and interdependence in a fictional network.
4 connected activities
Open the sequence →social studies · Grade 8
Analyze Shared Powers
Connect checks and balances to limits on federal power.
4 connected activities
Open the sequence →social studies · Grade 9
Interpret Population Tables
Compare population groups without making unsupported claims.
4 connected activities
Open the sequence →social studies · Grade 10
Analyze Change in an Industrial Model
Explain possible effects and limits of a simplified industrial change.
4 connected activities
Open the sequence →social studies · Grade 11
Compare Historical Perspectives
Compare source perspectives while distinguishing fictional practice from historical evidence.
6 connected activities
Open the sequence →social studies · Grade 12
Evaluate Economic Policy Claims
Read simplified economic indicators and identify causal uncertainty.
4 connected activities
Open the sequence →sel · pre-k
Notice Different Feelings
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · kindergarten
Sharing and Taking Turns
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 1
Pause and Choose a Strategy
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 2
A Useful Next Step
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 3
Understand Two Perspectives
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 4
Respond to a Shared Problem
Understand a fictional situation, consider perspectives and explain a constructive response.
6 connected activities
Open the sequence →sel · Grade 5
Make a Practical Goal
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 6
Listen and Check Understanding
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 7
Think Through a Decision
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 8
Communicate a Boundary
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 9
Make Team Roles Clear
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 10
Use Feedback Thoughtfully
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 11
Recognize a Decision Tradeoff
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →sel · Grade 12
Reflect and Adjust a Plan
Understand a fictional situation, consider perspectives and explain a constructive response.
4 connected activities
Open the sequence →esl · pre-k
Name Familiar Objects
Connect familiar objects to simple English words.
4 connected activities · Beginning oral English
Open the sequence →esl · kindergarten
Classroom Objects and Requests
Name classroom objects and make a simple polite request.
4 connected activities · Beginning
Open the sequence →esl · Grade 1
Action Words in Sentences
Use common action words in short present-tense sentences.
4 connected activities · Beginning
Open the sequence →esl · Grade 2
Describe Where Things Are
Use in, on and under to describe stated positions.
4 connected activities · Beginning
Open the sequence →esl · Grade 3
Ask for Help Clearly
Use polite questions to request help and clarification.
4 connected activities · Beginning to developing
Open the sequence →esl · Grade 4
Connect Events With Sequence Words
Use first, then and finally to connect a short sequence.
4 connected activities · Developing
Open the sequence →esl · Grade 5
Explain Words From Context
Infer a word’s meaning using context and use it in an explanation.
4 connected activities · Developing academic English
Open the sequence →esl · Grade 3, Grade 4, Grade 5, Grade 6, Grade 7, Grade 8
Beginning English for Older Learners
Ask and answer practical location questions with age-appropriate material.
8 connected activities · Beginning; suitable for older learners
Open the sequence →esl · Grade 7
Polite Requests and Possibilities
Use modal verbs to express a request or possibility.
4 connected activities · Developing
Open the sequence →esl · Grade 8
Compare Options in English
Use comparison language with stated data.
4 connected activities · Developing
Open the sequence →esl · Grade 9
Explain Causes With Care
Use cause and effect language while keeping uncertainty clear.
4 connected activities · Developing to expanding
Open the sequence →esl · Grade 10
Build a Qualified Argument
Use language frames to connect a claim, reasons and a limitation.
4 connected activities · Expanding academic English
Open the sequence →esl · Grade 11
Summarize and Attribute Ideas
Paraphrase accurately and distinguish reported ideas from personal opinion.
4 connected activities · Expanding
Open the sequence →esl · Grade 12
Synthesize Evidence in Academic English
Use cautious language to synthesize two limited sources.
4 connected activities · Advanced academic English
Open the sequence →arts music · pre-k
Make Pictures With Lines and Shapes
Use lines and shapes to create and describe a picture.
4 connected activities
Open the sequence →arts music · kindergarten
Complete a Mirror Pattern
Reflect a simple pattern across a vertical line.
6 connected activities
Open the sequence →arts music · Grade 1
Count and Build Beat Patterns
Read labeled durations and combine a short rhythm.
6 connected activities
Open the sequence →arts music · Grade 2
How Instruments Produce Sound
Connect familiar instruments to how sound is produced.
4 connected activities
Open the sequence →arts music · Grade 3
Read Treble Staff Positions
Use the order of treble-clef lines and spaces.
4 connected activities
Open the sequence →arts music · Grade 4
Plan Color and Visual Emphasis
Describe color choices and emphasis in a visual composition.
4 connected activities
Open the sequence →arts music · Grade 5
Tempo Dynamics and Musical Intent
Distinguish speed from loudness and describe expressive choices.
4 connected activities
Open the sequence →arts music · Grade 6
Analyze Balance and Negative Space
Explain how placement and empty space affect composition.
4 connected activities
Open the sequence →arts music · Grade 7
Group Durations Into Measures
Group durations according to a stated measure length.
4 connected activities
Open the sequence →arts music · Grade 8
Design Under Clear Constraints
Create and revise a visual design to meet stated conditions.
4 connected activities
Open the sequence →arts music · Grade 9
Support an Interpretation of a Composition
Use described visual evidence to support an interpretation.
4 connected activities
Open the sequence →arts music · Grade 10
Form Repetition and Contrast
Identify a simple musical form from labeled sections.
4 connected activities
Open the sequence →arts music · Grade 11
Evaluate a Creative Choice
Use purpose and evidence to critique and revise a design.
4 connected activities
Open the sequence →arts music · Grade 12
Reflect on a Creative Process
Explain development using specific decisions and evidence.
4 connected activities
Open the sequence →math · Grade 6
Percent as a Part of One Hundred
Relate percent, fraction and decimal representations in a stated whole.
4 connected activities
Open the sequence →math · Grade 7
Inequalities Describe Many Solutions
Solve selected inequalities and interpret the solution set.
4 connected activities
Open the sequence →math · Grade 8
Compare a Data Pattern With a Claim
Describe an association and separate it from a proven cause.
4 connected activities
Open the sequence →math · Grade 9
Quadratic Tables and Symmetry
Connect a quadratic rule with a table and symmetric values.
4 connected activities · Algebra 1
Open the sequence →math · Grade 9
Compare Center Spread and an Outlier
Calculate and interpret center and spread in a small data set.
4 connected activities · Statistics
Open the sequence →math · Grade 11
Inverse Functions and Restricted Domains
Find selected inverses and account for domain restrictions.
4 connected activities · Precalculus
Open the sequence →math · Grade 12
Conditional Probability Changes the Reference Group
Calculate probabilities from an invented two-way table.
4 connected activities · Statistics
Open the sequence →ela · pre-k
Listen for Rhymes and First Sounds
Compare spoken rhymes and beginning sounds with adult guidance.
4 connected activities
Open the sequence →ela · Grade 1
Short E From Words to a Story
Blend short-e CVC words and connect them to a short text.
4 connected activities
Open the sequence →ela · Grade 2
Keep Both Sounds in a Blend
Blend and spell words while preserving the consonant sounds.
4 connected activities
Open the sequence →ela · Grade 4
Use Word Parts and Check Context
Use selected prefixes and suffixes while checking meaning in context.
4 connected activities
Open the sequence →ela · Grade 7
Revise Sentence Boundaries for Meaning
Repair selected fragments and run-ons while preserving the intended relationships.
4 connected activities
Open the sequence →ela · Grade 8
Read Images and a Shift in a Poem
Support an interpretation of imagery and a tonal shift with text evidence.
4 connected activities
Open the sequence →science · Grade 4
Food Web Arrows Show Energy Transfer
Read selected energy relationships in a simplified food web.
4 connected activities
Open the sequence →science · Grade 5
Design a Comparison With Clear Variables
Identify variables, repeated measurements and limits in a proposed comparison.
4 connected activities
Open the sequence →science · Grade 7
Use a Particle Model With Care
Compare simplified particle arrangements and distinguish a model from actual particle size.
4 connected activities
Open the sequence →social studies · Grade 3
Use a Map Key and Grid Reference
Connect a map key and labeled grid references without assuming real-world scale.
4 connected activities
Open the sequence →arts music · Grade 2
Silence Still Takes Time
Count explicitly labeled sound and silence durations in a rhythm.
4 connected activities
Open the sequence →