Khan Academy: The Slope-Intercept Form of a Line
I’ve previously posted an animated illustration of the slope-intercept form, and you can use the straight lines (linear equations) app to check if you’re drawing straight lines correctly.
Middle and High School … from a Montessori Point of View
I’ve previously posted an animated illustration of the slope-intercept form, and you can use the straight lines (linear equations) app to check if you’re drawing straight lines correctly.
Khan Academy videos on how to solve systems of linear equations: Use a graphing calculator to double check your lines, or use WolframAlpha, or use my simple line grapher. by Graphing Video: Solving Linear Systems by Graphing Most algebra texts have good problem sets for practice (Khan Academy does not – as yet). by Substitution … Continue reading “Finding Where Two Lines Intersect: Khan Academy Lessons”
This is a basic review of working with fractions using lessons and practice sets from the Khan Academy. 1. Adding Fractions with a Common Denominator The first topic — adding fractions –ought to be really easy for algebra students, but it allows them to become familiar with the Khan Academy website and doing the practice … Continue reading “A Review of Fractions: Based on Khan Academy Lessons”
Adding decimals practice set (or practice set 2) and video:
Subtracting decimals practice set and video:
Multiplying fractions practice set and video.
The Khan Academy has an excellent page on adding fractions with unlike denominators. The practice set gives good feedback, and the video (below) seems effective.
To help students track their progress in math we’ve started requiring them to map what they’re doing on flowcharts. Right now, they’re doing it on paper, but we’re working on getting it to be all electronic. Tracking with the charts helps them see how what they’ve done fits into the bigger picture. It allows them … Continue reading “Math Flowcharts”