Debug Algorithm
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The Math of Credit Cards: The Luhn Algorithm (No-Prep Sub Plan)
The Math of Credit Cards: The Luhn Algorithm (No-Prep Sub Plan)Make your next sub day effortless with a lesson that turns a "dry" topic into a real-world investigation of data security. This resource teaches students how credit card numbers are verified using the Luhn Algorithm—the mathematical "secret code" that prevents typing errors during online shopping. It is a completely self-contained lesson, making it an ideal choice for emergency sub plans or supplemental instruction. No specialized t
9th - 12th
Algebra, Algebra 2
Bézout's Identity & Extended Euclidean Algorithm Lesson | Math Sub Plans | Turnk
Bézout's Identity & Extended Euclidean Algorithm Lesson | Math Sub Plans | Turnkey CurriculumTeach the structural mechanics of Bézout's Identity with expert-level confidence—even if your degree isn't in Math.Eliminate the prep work and conquer lesson-planning anxiety with a rigorous instructional package that completely teaches itself. Designed with precise structural layouts and embedded guiding frameworks, this turnkey lesson ensures any instructor can smoothly lead students through forward E
9th - 12th
Algebra, Algebra 2
The Euclidean Algorithm Complete Lesson Plan | Math Sub Plans | Turnkey Curricul
The Euclidean Algorithm Complete Lesson Plan | Math Sub Plans | Turnkey CurriculumTeach the structural mechanics of the Euclidean Algorithm with expert-level confidence—even if your degree isn't in Math.Eliminate the prep work and conquer lesson-planning anxiety with a rigorous instructional package that completely teaches itself. Designed with precise structural layouts and embedded guiding frameworks, this turnkey lesson ensures any instructor can smoothly lead students through recursive divis
9th - 12th
Algebra, Algebra 2
The Division Algorithm & Remainders Lesson Plan | Math Sub Plans | Homeschool &
The Division Algorithm & Remainders Lesson Plan | Math Sub Plans | Homeschool & Turnkey CurriculumTeach the structural mechanics of the Division Algorithm with expert-level confidence—even if your degree isn't in Math or Number Theory.Eliminate the prep work and conquer lesson-planning anxiety with a rigorous instructional package that completely teaches itself. Designed with precise structural layouts and embedded guiding frameworks, this turnkey lesson ensures any instructor can smoothly lead
9th - 12th
Algebra, Algebra 2
Matrices, Adjacency Matrix & Dijkstra Algorithm | MATH High School Lesson Plans
Bring clarity and coherence to your high school math classroom with this set of three complete lesson plans focused on Linear Algebra and Graph Theory. Designed for Teachers Pay Teachers (TPT) with careful attention to curriculum alignment, these detailed lesson plans cover the essential topics of matrix operations, adjacency matrix construction, matrix powers for path analysis, and the Dijkstra shortest-path algorithm. Each lesson plan is structured as a 90-minute double period, but
10th - 12th
Algebra, Algebra 2, Other (Math)
Euclid's Algorithm - uses in a high school mathematics class
Euclid’s Algorithm (EA) is a simple process by which you can find out the greatest common factor (GCF) of two numbers by repeatedly subtracting the smaller number from the bigger one. Euclid proved and used it in his series of textbooks, called the ‘Elements’.
On my first practicum, I was distraught to find that when I was teaching factorisation by common factor to my year 10s, many of them couldn’t remember their times tables. I couldn’t find any method of getting them to find the GCF between
9th - 12th
Algebra, Algebra 2, Geometry
Special Right Triangles: Proving/Practice BUNDLE w/BONUS Poster!
Help your geometry students understand the “why” behind the algorithms for special right triangles with this 7-page investigation and guided notes activity. Your students will use the Pythagorean Theorem and the properties of isosceles and equilateral triangles to discover how to solve for any side of a 45-45-90 and 30-60-90 triangle. Clear diagrams and step-by-step algebraic proofs allow students to develop the foundational understanding for working with these common right triangles, ensuring a
10th - 11th
Algebra 2, Geometry, Math
CCSS
HSA-CED.A.4
, HSA-REI.A.1
, HSG-CO.C.10
Proving 45-45-90 and 30-60-90 Right Triangles: Guided Notes
Help your geometry students understand the "why" behind the algorithms for special right triangles with this 7-page investigation and guided notes activity. Your students will use the Pythagorean Theorem and the properties of isosceles and equilateral triangles to discover how to solve for any side of a 45-45-90 and 30-60-90 triangle. Clear diagrams and step-by-step algebraic proofs allow students to develop the foundational understanding for working with these common right triangles, ensuring a
10th - 11th
Algebra 2, Geometry, Math
CCSS
HSA-CED.A.4
, HSA-REI.A.1
, HSG-CO.C.10
Also included in: Special Right Triangles: Proving/Practice BUNDLE w/BONUS Poster!
QVIII - Getting Ready for Completing the Square
Completing the Square (CTS) doesn’t have to be a memorized algorithm. This worksheet gives students a chance to put together the puzzle pieces that are needed to figure out "what goes where" when doing CTS. First they square some binomials, then use those patterns for fill-in-the-blanks equations. Finally, they have problems to encourage them to think about the role of parentheses in CTS. This is ready to print, or to assign as an online Easel Activity. The digital version is ready-to-use, but y
8th - 11th
Algebra, Algebra 2, Math
CCSS
HSA-SSE.B.3b
, HSA-REI.B.4a
, HSA-REI.B.4b
Linear Functions - Graphing TikTok Follower Growth - Algebra
Stop asking "When will we use this?" and start analyzing the algorithms behind their favorite apps!This Hero Mind lesson transforms the abstract concepts of Linear Functions, Slope, and Y-Intercepts into a relevant, high-interest investigation of social media analytics. Students act as data analysts to model follower growth for TikTok, Twitch, and YouTube creators, using algebra to predict when an account will "blow up" or surpass a rival. Designed for High School Algebra (and advanced Middle S
9th - 12th
Algebra, Algebra 2
CCSS
HSF-IF.C.8
Algebra 2H 4.09 Matrix Algebra Day 1 Spring 2017 (Editable)
This worksheet is designed to help students with the topic of matrix algebra, including an algorithm for multiplying matrices visually, the identity matrix, and how we use the concept of an inverse matrix instead of "division" of matrices.
I start out class with several examples of what today's lesson will be about. Once we finish doing the notes together, I have them get to work within their groups on this worksheet.
I use this activity within cooperative groups, and I circulate to make sure
9th - 12th
Algebra, Algebra 2, Math
Integers & Congruences Workbook – 120 Exercises + Answer Key
This print-and-go number theory workbook builds real fluency with 120 carefully sequenced exercises—from divisibility and the Euclidean algorithm to modular arithmetic, linear congruences, Chinese Remainder Theorem, modular exponentiation, units & orders, quadratic residues, arithmetic functions, Diophantine equations, and practical applications (checksums, hashing, toy RSA). Complete answer key included for every problem—perfect for classwork, homework, enrichment/contest prep, tutoring, o
11th - 12th
Algebra, Algebra 2
Subtracting Integers Anchor Chart
This anchor chart includes information about subtracting integers with counters and on a number line. Give a step by step algorithm. A black and white and colored version are included. This can be reduced to be printed for an individual student binders/notebooks or enlarged to be printed as a poster anchor chart. Other Anchor Charts In Integers Unit:Adding IntegersMultiplying IntegersDividing IntegersInteger Operations Bundle
6th - 8th
Algebra, Algebra 2, Applied Math
Algebra 2 Lesson Plans: Long Division of Polynomials | No-prep Sub Plan
Algebra 2 Lesson Plans: Long Division of Polynomials | Polynomial Division with Remainders | Math Sub Plans | Turnkey CurriculumMaster the polynomial division algorithm, align multi-term place values, and map rational remainder fractions with a turnkey lesson module.Demystify the multi-step algorithm that sets the stage for advanced rational expression analysis. This classroom-ready, plug-and-play curriculum module delivers a mathematically seamless, rigorous framework for teaching polynomial lo
9th - 12th
Algebra, Algebra 2
Integers & Congruences Workbook – 120 Exercises with Answer Key
Build real number-theory fluency with this print-and-go workbook of 120 carefully sequenced exercises—from divisibility and the Euclidean algorithm to modular arithmetic, linear congruences, the Chinese Remainder Theorem, modular exponentiation, units & orders, quadratic residues, arithmetic functions, Diophantine equations, and classroom-ready applications. A complete answer key is included for every problem, making it perfect for classwork, homework, enrichment/contest prep, tutoring, o
11th - 12th
Algebra, Algebra 2
Integers & Congruences Workbook – 120 Exercises + Answer Key
Build real number-theory fluency with this print-and-go workbook of 120 carefully sequenced exercises—from divisibility and the Euclidean algorithm to modular arithmetic, linear congruences, the Chinese Remainder Theorem, modular exponentiation, units & orders, quadratic residues, arithmetic functions, Diophantine equations, and classroom-ready applications. Perfect for classwork, homework, enrichment/contest prep, tutoring, or exam review. A complete answer key is included for every prob
11th - 12th
Algebra, Algebra 2
Cosmo's Minus Method (Poster / Handout)
Cosmo's Minus Method is an adaptation of Cramer's Rule I made for my Algebra 2 class. I wanted them to have this algorithm as an alternative to substitution or elimination to solve moderately difficult systems of 2 linear equations in standard form. I chose not to call it Cramer's Rule because a quick google search would reveal how to use Cramer's Rule with the available TI-84 Graphing Calculators. Also, the title of the algorithm "Cosmo's Minus Method" comes from the name of the crazy neighbor
7th - 11th
Algebra, Algebra 2, Math
Grade 9 to 12 Martin Luther King Math Algebra Linear Function Statistic Model
Help students analyze modern digital data through the lens of fairness, equity, and truth with this 10-page, black-and-white Influencer & Algorithm Analytics worksheet pack for Grades 9–12. Designed for Martin Luther King Jr. Day and beyond, this resource uses realistic (fictional) influencer and algorithm data to teach students how raw numbers can mislead and why fair mathematical comparisons matter. Across linear and exponential growth, percent change, ratios, and functions, students learn
9th - 12th
Algebra, Algebra 2, Statistics
CCSS
HSF-IF.B.4
, HSF-IF.B.5
, HSF-IF.B.6
+9
MAGIC SQUARE - ALGEBRA 1 - Solving Equations Style
After teaching your Algebra 1 students how to solve all sorts of equations, they do need a lot of practice so that the algorithm becomes automatic. MAGIC SQUARE - ALGEBRA style is an activity where students solve 16 different types of equations with the goal that the SUM of every row, column and diagonal is the same. ENJOY!
7th - 10th
Algebra, Algebra 2, Arithmetic
Polynomial Long Division Algebra 2 Lesson: Guided Notes, Homework, Exit Ticket
This Algebra 2 lesson introduces students to the process of polynomial long division, helping them divide a polynomial by a binomial using a structured, step-by-step algorithm. Students will learn how to organize their work, subtract terms carefully, and interpret both the quotient and remainder of a division problem. The lesson breaks down the process in a clear and approachable way which is perfect for students encountering polynomial division for the first time or needing a solid review. Th
9th - 11th
Algebra 2
CCSS
HSA-APR.D.6
Mathematics Stories: WHEN IN DOUBT & DO ONE LESS to learn the rules of exponents
Mathematics Stories - WHEN IN DOUBT, and DO ONE LESS, are two stories/ways to remember concepts that I spend the time to tell students because remembering the algorithms/rules of exponents are tough for a regular student. I'd say that 90% of my regular Algebra 2 students had no clue that in a multiplication problem, you add the exponents, let along WHY. One rule of thumb that I'd share with my mathematics department was, "If the student learns why when they are FIRST exposed to a concept, they
7th - 10th
Algebra, Algebra 2, Math
Error Analysis: Dividing Polynomials
This resource provides students an opportunity to practice dividing polynomials by analyzing questions that have already been solved incorrectly. Dividing monomials from polynomials, synthetic division, and the long division algorithm are all techniques that students should be familiar with. After finding the error, the students must explain in words what happened. Then they must solve the problem correctly. Feel free to click on the preview to see the types of errors that students must analyz
8th - 10th
Algebra, Algebra 2, Math
CCSS
HSA-APR.B.2
Also included in: Custom Bundle for Chris
Factoring Lesson 4: Factoring trinomials when a = 1 (AC Method)
Factoring trinomials whose leading coefficient (a) is 1. Notes included.
I do not teach the "guess and check" method of factoring; students struggle with it because there is no process. The "AC method" uses a process/algorithm to easily factor a trinomial; it relies on the concept of factoring by grouping.
1. Multiply a and c
2. Find factors of "ac" that add up to "b"
3. Rewrite "bx" using the factors you found
4. Factor by grouping
Because of this method, the only "new" thing between thi
8th - 11th
Algebra, Algebra 2
Mathematics Stories: Given tough x-intercepts, finding the VERTEX of a PARABOLA
For years and years of teaching advanced mathematics, I always just found the vertex of a parabola by completing the square. In challenging top end students, I'd give them "raunchy" x-intercepts and have them find the vertex. I taught the algorithm in this product, and figured that every textbook would do the same. I used to have dozens of old Algebra 2 and Pre-Calculus textbooks. The step by step procedure was not in any of them. I hope that all of you who teach HONORS level mathematics will
9th - 12th
Algebra, Algebra 2, PreCalculus
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