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All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Mathematics Mathematics groups

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Search the community's STEM library — free to study, yours to make your own.

Mathematics

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Mathematics: explore STEM content (page 15 of 23) · openstem

Quiz6 questions

What is a penny worth?

A5¢B1¢C10¢D25¢

Mathematics

Mathematics · L1 · Coin Recognition & Values

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Mathematics · L1 · Coin Recognition & Values

Flowchart11 objects

Mathematics

Mathematics · L2 · Solving a Two-Step Inequality

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Mathematics · L2 · Solving a Two-Step Inequality

Flowchart5 objects

Mathematics

Mathematics · L2 · Graphing Inequalities on a Number Line · flowchart

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Mathematics · L2 · Graphing Inequalities on a Number Line · flowchart

Flowchart7 objects

Mathematics

Mathematics · L1 · Doubling & Halving · flowchart

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Mathematics · L1 · Doubling & Halving · flowchart

Note~182 words · 1 min

Why two steps? x + 4 = 9 needs one undo. Two-step equations have a multiplier AND something added. x was multiplied by 2, then 3 was added. Undo in reverse order: the addition first. The two moves Inequalities: same moves, one extra rule So

Mathematics

Mathematics · L2 · Two-Step Equations & Inequalities

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Mathematics · L2 · Two-Step Equations & Inequalities

Flowchart9 objects

Mathematics

Mathematics · L3 · Introduction to Vectors · flowchart

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Mathematics · L3 · Introduction to Vectors · flowchart

Quiz10 questions

A study reports p = 0.03 with α = 0.05. What is the correct conclusion?

AThere is a 3% chance H₀ is trueBReject H₀; the result is statistically significant at the 5% levelCAccept H₁ as definitely trueDFail to reject H₀

Mathematics

Mathematics · L4 · Hypothesis Testing & Inference — 10 Q

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Mathematics · L4 · Hypothesis Testing & Inference — 10 Q

Quiz3 questions

What is the mean of 5, 10, and 15?

A10B12C15D5

Mathematics

Mathematics · L2 · Mean, Median, and Mode

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Mathematics · L2 · Mean, Median, and Mode

Flowchart11 objects

Mathematics

Mathematics · L3 · Law of Sines & Law of Cosines

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Mathematics · L3 · Law of Sines & Law of Cosines

Note~263 words · 1 min

Factors are few, multiples are endless Factors of 12: just 1, 2, 3, 4, 6, 12. Six numbers, and that's all of them. Multiples of 12 never stop. Prime, composite, and the odd one out Prime factorisation with a factor tree Split repeatedly unt

Mathematics

Mathematics · L2 · Factors, Multiples & Primes

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Mathematics · L2 · Factors, Multiples & Primes

Quiz6 questions

Which transformation slides a figure without flipping or turning it?

ARotationBReflectionCTranslationDDilation

Mathematics

Mathematics · L2 · Transformations: Translations, Reflections & Rotations

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Mathematics · L2 · Transformations: Translations, Reflections & Rotations

Quiz6 questions

What is a table of values used for when graphing a line?

ATo measure the steepness of the lineBTo generate (x, y) points that can be plotted to draw the lineCTo rewrite the equation in a different formDTo find the line's length

Mathematics

Mathematics · L2 · Graphing Linear Equations

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Mathematics · L2 · Graphing Linear Equations

Quiz6 questions

What is the first thing you should do before comparing the length of two sticks?

AGuess which one looks longerBLine up one end of each stick togetherCPaint them the same colorDMeasure them with a ruler

Mathematics

Mathematics · L1 · Comparing Length: Longer, Shorter, Taller

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Mathematics · L1 · Comparing Length: Longer, Shorter, Taller

Plot1 plot · 2 params

Mathematics

Normal Distribution: exp(−(x−μ)²/(2σ²))

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Normal Distribution: exp(−(x−μ)²/(2σ²))

Flowchart7 objects

Mathematics

Mathematics · L1 · Money & Making Change · flowchart

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Mathematics · L1 · Money & Making Change · flowchart

Note~245 words · 1 min

Solid shapes take up space 3D shapes aren't flat on paper. They take up room, and they're everywhere once you look. Faces, edges and corners Symmetry: folding in half A shape has line symmetry if you can fold it exactly in half and both sid

Mathematics

Mathematics · L1 · 3D Shapes & Symmetry

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Mathematics · L1 · 3D Shapes & Symmetry

Note~270 words · 1 min

Two routes to the same answers Every quadratic is ax² + bx + c = 0. You have two tools. 1. Factoring Split it into two brackets, then set each bracket to zero. 2. The quadratic formula The bit under the root, b² − 4ac, is the discriminant.

Mathematics

Mathematics · L3 · Factoring & the Quadratic Formula

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Mathematics · L3 · Factoring & the Quadratic Formula

Note~293 words · 1 min

Identify the family first One question sorts nearly every solid: what does its cross-section do? The formula table For cones and pyramids, l is the SLANT height along the surface, not the vertical height h. Where the one-third comes from Sa

Mathematics

Mathematics · L3 · Surface Area & Volume of Solids

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Mathematics · L3 · Surface Area & Volume of Solids

Flowchart11 objects

Mathematics

Mathematics · L1 · Comparing Length: Longer, Shorter, Taller

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Mathematics · L1 · Comparing Length: Longer, Shorter, Taller

Plot1 plot · 1 param

Mathematics

Exponential Decay: y = e^(−k·x)

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Exponential Decay: y = e^(−k·x)

Flowchart9 objects

Mathematics

Mathematics · L2 · How Squaring Builds a Perfect Square

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Mathematics · L2 · How Squaring Builds a Perfect Square

Flowchart7 objects

Mathematics

Mathematics · L1 · 3D Shapes & Symmetry · flowchart

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Mathematics · L1 · 3D Shapes & Symmetry · flowchart

Note~289 words · 1 min

Unfold it, then add up the pieces Surface area is the total area of every outside face: how much material would wrap it completely. Imagine cutting along the edges and flattening the solid into a net, then add every piece. Rectangular prism

Mathematics

Mathematics · L2 · Surface Area of Prisms & Pyramids

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Mathematics · L2 · Surface Area of Prisms & Pyramids

Flowchart11 objects

Mathematics

Mathematics · L2 · Building a Net Step by Step

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Mathematics · L2 · Building a Net Step by Step

Quiz6 questions

Convert the polar point (2, π/2) to rectangular coordinates.

A(0, 2)B(2, 0)C(0, −2)D(2, 2)

Mathematics

Mathematics · L3 · Polar Coordinates & Graphing

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Mathematics · L3 · Polar Coordinates & Graphing

Flowchart11 objects

Mathematics

Mathematics · L2 · Angle Relationships · flowchart

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Mathematics · L2 · Angle Relationships · flowchart

Flashcards8 cards

What is the range of a data set?1 / 8

The range tells you how spread out the data is. Range = biggest value − smallest value. It's the simplest way to measure spread.

Mathematics

Mathematics · L2 · Range, Outliers & Data Spread

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Mathematics · L2 · Range, Outliers & Data Spread

Note~173 words · 1 min

The parts Circumference: the distance around Divide any circle's circumference by its diameter and you always get π, about 3.14. That's where both formulas come from. Area: the space inside One circle, all three quantities

Mathematics

Mathematics · L2 · Circles: Circumference & Area

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Mathematics · L2 · Circles: Circumference & Area

Flashcards7 cards

What do a fraction, a decimal, and a percent all describe?1 / 7

The exact same amount, just written in three different forms. 1/2, 0.5, and 50% all mean the same part of a whole.

Mathematics

Mathematics · L2 · Decimals & Percents

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Mathematics · L2 · Decimals & Percents

Note~282 words · 1 min

Slicing a circle two ways Central versus inscribed angles So a 90° central angle means every inscribed angle standing on that arc is 45°, wherever on the circle you put its vertex. Move the vertex all you like; the answer doesn't budge. The

Mathematics

Mathematics · L3 · Circles: Arcs, Sectors & Equations

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Mathematics · L3 · Circles: Arcs, Sectors & Equations

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