Every lesson here is a page you can click through at your own pace. Move the sliders, press the buttons, and watch what changes.
← Back to the class pageCourse 2073
What is n?NEW Where the letter n comes from: a piggy bank story turns "day number" into a named blank. X and YNEW A pizza order turns x and y into input and output — plus coefficient and constant. Reading f(x)NEW Two shops, one letter y — so we name the machines: name(input) = recipe, and f(2) = 7. The function machine What a function is, f(x) notation, the four families, and the vertical line test. Naming the pattern Four checks in order: is it a function, subtract, divide, subtract twice. Linear tilesNEW Build the tile pattern 4, 7, 10 up to Design 5, then extract the equation tiles = 3n + 1. Staircase tilesNEW Grow the 1, 3, 6 staircase, then discover the equation tiles = n × (n + 1) ÷ 2. The Crossing PointNEW When do two growing teams become equal? Watch the bar race, then divide the expressions — the tie is 1. Opening brackets Distributing, squaring a bracket, and why a plus in front changes nothing. The H tile practice, step by step Every practice answer explained slowly, with big text and picture clues.Course 2075
1 Slope walk Walk the rise and the run one step at a time. 2 Distance and midpoint Measure between two points and find the spot halfway. 3 Parallel and perpendicular See why one pair never meets and the other makes a square corner. 4 Graphing a line Start at the y-intercept, then step out the slope. 5 Rotations Spin a shape around the origin and track where each corner lands. 6 Counting units Count squares on the grid instead of guessing. 7 Slope triangle Build the triangle between two points and read the slope off it. 8 Write the equation Turn a drawn line back into y = mx + b. 9 Find the distance Five examples: watch the run and rise grow, then the straight path. 10 Where the line crosses Five examples of the x-intercept and y-intercept, plus the backwards trap. 11 Special slopes Horizontal lines (slope 0, y = number) and vertical lines (undefined, x = number). Rent race Two rent plans, two lines, one crossing point. Stained glass angles Find missing angles inside a stained glass pattern.