CORE FOUNDATIONS™

Math Intervention, Grades 5–8

It doesn’t reteach.
It unlocks.

Discussion-based intervention that helps students explain ideas, compare strategies and build understanding, one skill at a time. Teachers guide the conversation, with brief, clear explanations from Howie Hua.

Howie Hua explains a mathematical idea for Core Foundations.
Seeing math with Howie Hua.
Small groups · Shared thinking

The conversation
is the intervention.

Students explain their reasoning, listen to one another and connect ideas. Shared work makes their thinking visible so the group can compare approaches and the teacher can guide the discussion.

93

Essential skillsAcross four grade-level courses.

3 × 30

Minutes per skillThree connected, 30-minute sessions.

25+

LanguagesTranslated videos, student pages and prompts.

Students discuss and write mathematics on shared whiteboards.
A shared workspace for comparing ideas.
CORE FOUNDATIONS™ · SAMPLE SKILL

Figure it out. Talk it through.
Show what you know.

Every skill runs three 30-minute sessions. Follow The Traveling Suitcase, a story about 10-to-1 place value relationships. Discussion comes first, so students build the idea before the procedure.

The Traveling Suitcase visual prompt shows scaled scenes labelled 900 feet, 90 feet and 9 feet, connected by a red line.
The Traveling Suitcase · Course 1, Skill 1
  1. Figure it out

    Teams watch a visual pattern, discuss what comes next and investigate a story that gives the mathematics a context.

  2. Talk it through

    Students discuss each problem before working it through. Howie Hua adds brief, clear explanations of the mathematics.

  3. Show what you know

    Teams unpack an image that connects the story to the skill. Each student then checks understanding and reflects in their Student Journal.

Example: The Traveling Suitcase, Course 1, Skill 1, explores 10-to-1 place value relationships.

CORE FOUNDATIONS™

93 essential skills.
Four courses.

Four grade-level courses, with three 30-minute sessions for every skill. Explore the skills in each course below.

Course 1Grade 5 · 26 skills

Number & Operations

  1. Place Value Relationships
  2. Powers of 10
  3. Read/Write Decimals
  4. Compare Decimals
  5. Round Decimals
  6. Multiply Whole Numbers
  7. Divide Whole Numbers
  8. Decimal Operations

Fractions

  1. Add/Subtract Fractions
  2. Fractions as Division
  3. Multiply Fractions
  4. Fractional Area
  5. Compare Products
  6. Multiplication as Scaling
  7. Unit Fraction ÷ Whole Number
  8. Whole Number ÷ Unit Fraction

Geometry & Measurement

  1. Convert Units
  2. Volume Concepts
  3. Count Unit Cubes
  4. Volume by Multiplication
  5. Volume Formulas
  6. Coordinate Plane
  7. Graph Points
  8. Shape Properties

Algebra & Functions

  1. Write Expressions
  2. Number Patterns
Course 2Grade 6 · 23 skills

Ratios & Proportions

  1. Ratio Language
  2. Unit Rates
  3. Ratio Tables
  4. Percents

Number & Operations

  1. Divide Fractions
  2. Negative Numbers
  3. Opposites
  4. Four Quadrants
  5. Order Rationals
  6. Order in Context
  7. Absolute Value

Algebra & Functions

  1. Write Algebraic Expressions
  2. Equivalent Expressions
  3. Solution Sets
  4. One-Step Equations
  5. Write Inequalities
  6. Graph Inequalities
  7. Indep/Dep Variables
  8. Equations, Tables, Graphs

Geometry & Measurement

  1. Surface Area

Statistics & Probability

  1. Statistical Questions
  2. Distributions
  3. Summarize Data
Course 3Grade 7 · 20 skills

Number & Operations

  1. Add Rationals
  2. Subtract Rationals
  3. Multiply Rationals
  4. Divide Rationals
  5. Fractions to Decimals

Ratios & Proportions

  1. Proportional Relationships
  2. Constant of Proportionality
  3. Proportional Equations
  4. Percent Applications

Algebra & Functions

  1. Combine Like Terms
  2. Factor Expressions
  3. Two-Step Equations
  4. Two-Step Inequalities

Geometry & Measurement

  1. Scale Drawings
  2. Construct Triangles
  3. Geometry of Circles
  4. Angle Relationships

Statistics & Probability

  1. Sample Inferences
  2. Compare Populations
  3. Probability Concept
Course 4Grade 8 · 24 skills

Algebra & Functions

  1. Exponent Rules
  2. Square/Cube Roots
  3. Scientific Notation
  4. Slope as Rate
  5. Slope-Intercept Form
  6. Solution Cases
  7. Multi-Step Equations
  8. Systems Concept
  9. Solve Systems
  10. Function Concept
  11. Compare Functions
  12. Linear vs Nonlinear
  13. Model with Lines

Number & Operations

  1. Rationals and Irrationals
  2. Approximate Irrationals

Geometry & Measurement

  1. Congruence
  2. Graph Transformations
  3. Similarity
  4. Triangle Angles
  5. Apply Pythagorean
  6. Volume of Solids

Statistics & Probability

  1. Scatter Plots
  2. Line of Best Fit
  3. Slope/Intercept
Skills Diagnostic

Know where students
start, grow and finish.

The Skills Diagnostic is given at the beginning, middle and end of each course. Results help teachers identify skills that need attention and follow students’ development over time.

Beginning of course

Identify the skills holding students back.

Middle of course

Check growth and choose which skills to work on next.

End of course

Review how far each student has come, using skill-level results for the class and individual students.

TEACHER-READY · SUB-READY

A playbook
for every skill.

The Teacher Playbook is low-prep and step by step: what to say, which prompts draw out thinking, and what comes next.

IN EVERY LANGUAGE

Videos, student pages and prompts are fully translated in 25+ languages, with skill-specific language supports.

PROMPTS TO ELICIT THINKING

“What’s happening in this image?” “Where do you see this skill being used?” Open questions and sentence starters give students a way into the discussion.

A shared workspace.

Groups of three at vertical whiteboards are one example. The focus is on comparing ideas, making reasoning visible and giving every student time to reflect.

Original Teacher Playbook cover for Core Foundations Course 1, Skill 1, The Traveling Suitcase.
The Teacher Playbook for a single skill.
STANDALONE OR BUILT-IN

TWO WAYS
TO USE IT

Pull-out intervention

Use the three-session sequence to focus on the skills students need.

Alongside Core Curriculum™

Teachers can respond on Flex Day with foundational skills students need.

Explore Core Curriculum
GETTING STARTED

Start a conversation.

Connect with the MidSchoolMath team to explore the materials and discuss how intervention can fit your teachers’ and students’ needs.

Sources and notes

Source: MidSchoolMath 2027 Program Guide, pp. 38–45 and 54. The four courses total 93 skills: 26 + 23 + 20 + 24. Building Blocks is an additional course.

The 25+ language and full-translation descriptions apply to Core Foundations videos, student pages and prompts. Core Curriculum has a different set of language supports. The research and EdReports findings presented for Core Curriculum should not be read as a review of Core Foundations.

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Support the basics and fluency
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