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Math sketches

Explore sketches, drawings, and illustrations that simplify ideas related to Math.

What is Naismith's Rule for calculating walking time in the mountains example explained with a mountain ridge with hikers and lines for the horizontal distance and time and ascent and timeNaismith's Rule for mountain hiking timeIceberg floating orientation explained: Icebergs are usually drawn floating vertically, while a stable iceberg orientation is usually on its sideIceberg orientationWhat is parallax explanation - how parallax works showing different layers moving at different speedsParallaxA circle with a number of its mathematical parts labelled. And someone trying to climb up the tangent.Parts of a circleSneaky averages: A statistician sinking in the deep part of a pond by a sign saying the average depth is 3ftSneaky averagesMöbius strip animation: a small red ball continuously rolls around the surface of a 2-dimensional strip that has been twisted before having its ends joined - meaning the ball covers the entire shape. Möbius stripBrilliance bias: A group of people in a gallery of portraits of famous people lament that the brilliant women were forgotten againBrilliance biasFiguring out the order of operations in a calculation using BODMAS (or PEMDAS)BODMASSampling bias: a presenter proudly shows the conclusion of a bar chart of responses from people who were asked if they love responding to surveys. A resounding 'yes'.Sampling biasA breakdown of constructing the number 13 in the decimal system of base 10 next to 13 written in the base 2 of binaryBinaryThe Haversine Formula illustration: a portion of the earth's globe is shown with a green arc drawn between the cities of London, UK and Seattle, WA. The mathematical Haversine formula takes into account the curvature of the earth's surface when calculating the true distance between two points on a curved surface. The haversine formulaThe 9-times table on your Fingers illustration: holding up both hands in front of you, the example of 3 x 9 is given; whereby the 3rd finger from the left is lowered leaving 2 fingers to the left of the gap and 7 fingers to the right. 2 and 7 gives 27. The 9 times table on your fingersThe coastline paradox: a map of the UK dividing up the coastline with ever smaller rulers shows how the coastline length dramatically increasesThe coastline paradoxAccuracy and Precision illustration: 4 circular targets with red dots marking a series of strikes show the difference between accuracy and precision. Accuracy and precisionFix wobbly tables by rotating illustration: a puzzled character considers how to prevent their 4-legged table from wobbling. Instead of popping something under one of the legs, they're encouraged to try rotating it. It's worked, and they celebrate with a glass of something cold! Fix wobbly tables by rotatingIdempotence, or idempotent, illustrated with an idempotent action of look_at_cake that always has the same effect, compared with a non-idempotent action of eat_slice_of_cakeIdempotenceThe Monty Hall problemAsymmetry of returnsWin at MonopolyThe most beautiful equationthe Angle of Incidence equals the Angle of Reflection
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