- HOW TO USE THIS BLOG. CLICK ON THE TOPIC AND THE ARTICLE WILL APPEAR BELOW. SCROLL DOWN TO IT.
- Concrete to Abstract
- The Definition of Math is …
- One 1873 View of Percent
- Recognize x∧2 – x – 1 = 0?
- A Short, Short Discourse on Digit Sum
- Openings
- Ted’s Question: Can I Graph a Decimal Slope?
- Yet Another Subtraction Algorithm!
- Heron’s Area of a Triangle
- Must We Filter Students Through the Math Sieve?
- A 1st Day Handout to Students
- A Student’s Aha Moment
- Homework: Solve This Equation 4 Ways
- Revisiting Mr. Stoddard’s 1852 Subtraction
- Vedic Version of a Line From Two Points
- In 1877, Mr. Ray Reasons with Fractions
- Math Stories
- Is it ̶ 3 or is it ̶ 3?
- The Importance of a Clearly Stated Algorithm
- Commentary: Algebra – yes or no?
- An 8th Grade Final Exam: Salina , KS – 1895
- Unequations Buzz
- Walk the Clock: It’s Fractions
- Metric to Metric Conversion: Ultimately, it’s a Proportion!
- Algebraic Fishiness
- Rephrase That Impossible Application Problem
- What? That Much Percent Increase?
- Two Alternatives to “Borrowing” When Doing Subtraction
- Four Sentences (that’s right – only four!) about Math
- Percent Problems from 1868
- An 1851 Use of Duodecimal
- Fibonacci: Surprise and Pattern in Mathematics
- Some Old Commentary on Today’s Common Core Math
- Math Fragments Perpetuate Fragmented Learning
- Setting up Equations the Old Fashioned Way
- Visually Explaining Shared Work Problems
- Staring
- Some 1800s Fractions That Might Fracture Today’s Students
- That Rascal Pascal
- Counting Sheep
- Blended Factoring
- Simultaneous Equations in the 1800s
- What is the Question to This Answer?
- Are We Lying About Factoring?
- Are We Adding Ratios (rates?) or Fractions?
- Exploring an 1864 Demonstration that ( – )( – ) = +
- Driving the Integer Road
- Historically Multiplying and Dividing Fractions by a Number
- Don’t use PEMDAS, Just Underline Terms
- Math Was … Math Is
- A Different Formula for Average
- Chipping Away at Equations
- A Toddler, Pascal and Fibonacci Climb Steps
- Sheldon’s Compound Proportions
- Using Zero when Subtracting
- Danny, Mike and Mary Work Together
- Converting a base-x number Directly to a base-y number in 1880
- An 1851 Quadratic Factoring Method
- Visualizing Fraction Operations with a Rectangle
- Mixing it up with Alligation
- Percent Proportion
- It Makes a Difference
- Subtract by Adding … really!
- Finding the LCD, 1881 Style
- Hannah Solves a Problem
- Concrete to Abstract
- Signed Numbers with Chips

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