Maps for Math

You need math. Here’s the map.

Every exhibit is already working. Tap one, change something, and related exhibits grow around it.

With 12 V across 10 Ω, a current of 1.2 A flows and the resistor turns 14.4 W into heat.

Ohm’s law: how much current flows?

Push harder (volts) or squeeze tighter (ohms), and watch the current change.

The plans cost the same, $38.00, at 6 GB. At 8 GB, Plan A costs $44.00 and Plan B costs $41.00, so Plan B is cheaper.

Phone plans: finding the break-even point

Two plans, two lines. Where they cross, the price is the same.

Mix 6 L of the 5% with 4 L of the 50% to get 10 L at 23%.

Mixing solutions: how much of each?

Two strengths, one target. Two equations tell you exactly how much of each to pour.

Ohm’s Law & Electrical Power: 60 W bulb on 120 V.

Ohm’s Law & Electrical Power

Twelve formulas, one wheel. Know any two and find the other two.

With the sun 20° above the horizon, a 12 m shadow means the object is 4.37 m tall.

How tall is that tree? Measure its shadow

One shadow and the sun’s angle give you the height, no climbing needed.

40% off $80.00 makes it $48.00; with 5% tax you pay $50.40, saving $29.60 overall.

Sale price and tax: what you really pay

30% off, then tax on top. Percent math decides the number at the register.

To serve 3 instead of 6, multiply everything by 0.5: 1¼ cups of flour, ¼ cups of milk, and 1 eggs (use 1).

Scaling a recipe: more people, same taste

Double the guests? Every ingredient grows by the same factor.

Thrown at 10 m/s and 27° from 2 m up, the ball peaks at 3.05 m, stays in the air 1.25 s, and lands 11.2 m away.

Throwing a ball: the quadratic arc

Every throw, jump, and fountain draws a parabola.