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<h1>MathBored</h1>
<div class="tagline">Essential Math Primer</div>
</div>
</div>
</div>
</header>
<div class="container">
<a href="index.html" class="back-link">← Back to Main App</a>
<div class="primer-hero">
<h1>Essential Math Primer</h1>
<p class="primer-tagline">15-minute standalone lessons covering K-12 math concepts</p>
<div class="primer-stats">
<div class="stat-box">
<span class="stat-number">105</span>
<span class="stat-label">Lessons</span>
</div>
<div class="stat-box">
<span class="stat-number">15</span>
<span class="stat-label">Minutes Each</span>
</div>
<div class="stat-box">
<span class="stat-number">K-12</span>
<span class="stat-label">Grade Coverage</span>
</div>
<div class="stat-box">
<span class="stat-number">8</span>
<span class="stat-label">Grade Bands</span>
</div>
</div>
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<h2 style="margin: 0 0 10px 0;">Your Progress</h2>
<p style="color: var(--text-secondary); margin: 0 0 15px 0;">
<span id="completedCount">0</span> of 105 lessons completed
(<span id="progressPercent">0</span>%)
</p>
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<div style="text-align: center; margin: 40px 0;">
<a href="primer/E01.html" class="start-pathway-btn">
Start with Lesson 1 — What Numbers Are
</a>
</div>
<div id="curriculumContent">
<div style="text-align: center; padding: 60px 20px; color: var(--text-secondary);">
<div style="font-size: 3rem; margin-bottom: 20px;">⏳</div>
<p>Loading curriculum...</p>
</div>
</div>
<!-- Noscript fallback for SEO and accessibility -->
<noscript>
<div style="background: var(--bg-secondary); border: 2px solid var(--border); border-radius: 16px; padding: 30px; margin-bottom: 30px;">
<h2 style="margin-top: 0;">📚 Course Lessons</h2>
<p style="color: var(--text-secondary); margin-bottom: 25px;">Browse our comprehensive K-12 math curriculum with 105 lessons.</p>
<h3 style="color: var(--accent); margin-top: 30px;">Elementary Foundations (K-5)</h3>
<ul style="line-height: 2;">
<li><a href="primer/E01.html">E01: What Numbers Are</a> - Counting, place value foundation, number sense</li>
<li><a href="primer/E02.html">E02: Addition Foundations</a> - Strategies, mental math, building fluency</li>
<li><a href="primer/E03.html">E03: Subtraction Basics</a> - Subtraction as inverse of addition, conceptual understanding</li>
<li><a href="primer/E04.html">E04: Multiplication Introduction</a> - Arrays, repeated addition, foundational multiplication</li>
<li><a href="primer/E05.html">E05: Division Basics</a> - Division as inverse of multiplication, fair sharing concept</li>
<li><a href="primer/E06.html">E06: Fractions Introduction</a> - Halves, thirds, fourths, intuitive fraction understanding</li>
<li><a href="primer/E07.html">E07: Comparing & Ordering</a> - Comparing numbers and fractions, ordering on number line</li>
<li><a href="primer/E08.html">E08: Measurement Basics</a> - Length, time, money, standard units</li>
<li><a href="primer/E09.html">E09: Geometry Fundamentals</a> - Shapes, properties, perimeter, area basics</li>
<li><a href="primer/E10.html">E10: Word Problems</a> - Translating English to math, problem-solving approach</li>
<li><a href="primer/E11.html">E11: Patterns & Sequences</a> - Identifying and extending patterns, sequence basics</li>
<li><a href="primer/E12.html">E12: Data & Graphs</a> - Collecting data, pictographs, bar graphs, interpretation</li>
</ul>
<h3 style="color: var(--accent); margin-top: 30px;">K-2 Foundations (K-2)</h3>
<ul style="line-height: 2;">
<li><a href="primer/K01.html">K01: Place Value: Tens and Ones</a> - Groups of ten, expanded form, base-10 blocks</li>
<li><a href="primer/K02.html">K02: Hundreds and Regrouping</a> - Three-digit numbers, regrouping ones/tens/hundreds</li>
<li><a href="primer/K03.html">K03: Comparing and Ordering Numbers</a> - Greater than, less than, equal to, number line</li>
<li><a href="primer/K04.html">K04: Multi-Digit Addition with Regrouping</a> - Vertical addition, carrying, estimating sums</li>
<li><a href="primer/K05.html">K05: Multi-Digit Subtraction with Regrouping</a> - Vertical subtraction, borrowing, checking with addition</li>
<li><a href="primer/K06.html">K06: Time and Money in Everyday Life</a> - Clocks, calendars, coins, skip counting</li>
</ul>
<h3 style="color: var(--accent); margin-top: 30px;">Upper Elementary (3-5)</h3>
<ul style="line-height: 2;">
<li><a href="primer/U01.html">U01: Place Value to Millions & Billions</a> - Extended place value, standard/expanded/word form</li>
<li><a href="primer/U02.html">U02: Multi-Digit Multiplication Strategies</a> - Area models, partial products, standard algorithm</li>
<li><a href="primer/U03.html">U03: Long Division Algorithm</a> - Divide-multiply-subtract-bring down, remainders</li>
<li><a href="primer/U04.html">U04: Mixed Numbers & Improper Fractions</a> - Converting between forms, number line</li>
<li><a href="primer/U05.html">U05: Fraction Operations with Mixed Numbers</a> - Add, subtract, multiply mixed numbers</li>
<li><a href="primer/U06.html">U06: Decimal Operations: Addition & Subtraction</a> - Aligning decimals, estimating</li>
<li><a href="primer/U07.html">U07: Decimal Operations: Multiplication & Division</a> - Multiplying/dividing decimals</li>
<li><a href="primer/U08.html">U08: Area, Perimeter & Volume Applications</a> - Composite figures, rectangular prisms</li>
</ul>
<h3 style="color: var(--accent); margin-top: 30px;">Middle School Bridge (6-8)</h3>
<ul style="line-height: 2;">
<li><a href="primer/M13.html">M13: Fraction Fluency</a> - Equivalent fractions, reducing to lowest terms</li>
<li><a href="primer/M14.html">M14: Fraction Operations</a> - Common denominators, operations with fractions</li>
<li><a href="primer/M15.html">M15: Advanced Fraction Operations</a> - Multiplication and division algorithms for fractions</li>
<li><a href="primer/M16.html">M16: Decimal Numbers</a> - Decimal notation, operations, relationship to fractions</li>
<li><a href="primer/M17.html">M17: Percent Basics</a> - Percent concept, conversions, calculations</li>
<li><a href="primer/M18.html">M18: Ratios & Proportions</a> - Ratios, rates, proportions, direct relationships</li>
<li><a href="primer/M19.html">M19: Integers</a> - Negative numbers, integer operations, number line</li>
<li><a href="primer/M20.html">M20: Introduction to Variables</a> - Variables as unknown quantities, basic notation</li>
<li><a href="primer/M21.html">M21: Basic Equations</a> - Two-step equations, inverse operations, balance method</li>
<li><a href="primer/M22.html">M22: Order of Operations</a> - PEMDAS, sequence of operations, evaluation</li>
<li><a href="primer/M23.html">M23: Exponents</a> - Exponential notation, properties of exponents, powers of 10</li>
<li><a href="primer/M24.html">M24: Square Roots</a> - Square roots, radical notation, perfect squares intro</li>
<li><a href="primer/M25.html">M25: Coordinate Plane</a> - Coordinate plane, ordered pairs, plotting points</li>
<li><a href="primer/M26.html">M26: Introduction to Functions</a> - Function concept, input-output, function notation</li>
<li><a href="primer/M27.html">M27: Linear Relationships</a> - Linear patterns, constant rate, introduction to linear functions</li>
</ul>
<h3 style="color: var(--accent); margin-top: 30px;">High School Essentials (9-12)</h3>
<ul style="line-height: 2;">
<li><a href="primer/H28.html">H28: Linear Equations</a> - Slope-intercept, point-slope, standard form</li>
<li><a href="primer/H29.html">H29: Graphing Linear Functions</a> - Graphing lines, slope interpretation, transformations</li>
<li><a href="primer/H30.html">H30: Systems of Linear Equations</a> - Solving systems, graphical and algebraic methods</li>
<li><a href="primer/H31.html">H31: Slope & Rate of Change</a> - Slope concept, rate of change, secant lines</li>
<li><a href="primer/H32.html">H32: Polynomials & Terminology</a> - Polynomial definitions, degree, standard form</li>
<li><a href="primer/H33.html">H33: Factoring Techniques</a> - GCF, trinomials, special products, factoring</li>
<li><a href="primer/H34.html">H34: Quadratic Equations - Conceptual</a> - Quadratic concept, parabolas, roots, vertex</li>
<li><a href="primer/H35.html">H35: Solving Quadratics</a> - Factoring, quadratic formula, completing the square</li>
<li><a href="primer/H36.html">H36: Function Notation & Composition</a> - Function notation, evaluation, composition of functions</li>
<li><a href="primer/H37.html">H37: Inverse Functions</a> - Inverse concept, finding inverses, properties</li>
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<li><a href="primer/R58.html">R58: PEMDAS Pitfalls</a> - Common order of operations mistakes</li>
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