Or search by topic
stemNRICH : Science, Technology, Engineering, Mathematics enriched | |||||
Area of maths | Style | Question | Description |
---|---|---|---|
Rates of change | Maths Filler 2 | Practise looking at rates of change as this vessel fills with water. | |
Immersion | Various solids are lowered into a beaker of water. How does the water level rise in each case? | ||
Brimful | Rotate the curves to make some mathematical vessels. | ||
Brimful 2 | Which of these mathematical flasks will eventually fill up with water? | ||
Curves | Curve Fitter | Use your skill to try to fit a cubic equation through these three points. | |
Curve Fitter 2 | Can you make a cubic which has a certain distance between the turning points? | ||
Implicitly | Can you find the shape of this implicity defined function? | ||
Whose line graph is it anyway? | Which line graphs, processes and equations go together? | ||
Can you sketch these difficult curves, which have uses in mathematical modelling? | |||
Calculus | Calculus is involved in many problems on stemNRICH. See the physNRICH and engNRICH pages for various particular examples. | ||
Can you hit the target functions using a set of input function and a little calculus and algebra? | |||
Integration Matcher | Which curves, integrals and differentials go together? | ||
What functions can you make using the function machines RECIPROCAL and PRODUCT and the operator machines DIFF and INT? | |||
Differential equations | You will also find lots of differential equations problems in various sections on the physNRICH and engNRICH pages | ||
Differential Equation Matcher | Match the descriptions of physical processes to these differential equations. | ||
Explore the possible mathematical solutions to the non-linear order of reaction equation from chemistry. | |||
Series and expansions | Production Equation | Each week a company produces X units and sells p per cent of its stock. How should the company plan its warehouse space? | |
Stirling Work | See how enormously large quantities can cancel out to give a good approximation to the factorial function. | ||
What Do Functions Do for Tiny x? | How do these familiar functions behave for very small values? | ||
Get further into power series using the fascinating Bessel's equation. | |||
Powers, roots and logarithms | See also the Logarithms and pH problems on the chemNRICH pages | ||
Power Match | Can you locate these values on this interactive logarithmic scale? | ||
Debt Race | Who will be the first investor to pay off their debt? | ||
Probability and distributions | pdf Matcher | What scientific stories can you match to these pdf curves? | |
Circle PDF | How can an arc of a circle be a pdf? | ||
Scale Invariance | By exploring the concept of scale invariance, find the probability that a random piece of real-world data begins with a 1. | ||
Into the Exponential Distribution | Get into the exponential distribution through an exploration of its pdf. | ||
Into the Normal Distribution | Get into the normal distribution through an exploration of its pdf. | ||
Statistics | Stats Statements | This question gives you 10 statistical statements. Develop your statistical intuition by asking yourself are they sometimes, always, nearly always, almost never or never true?' | |
Overbooking | Why do airlines overbook? | ||
The Wrong Stats | Why MUST these statistical statements be at least a little bit wrong? | ||
Aim High | How much wheat should this farmer plant to minimise his expected loss? | ||
Time to Evolve 2 | How would you model the time between your birth and that of your grandfather? | ||
Trigonometry | Flight Path | Use simple trigonometry to calculate the distance along the flight path from London to Sydney. | |
Loch Ness | Draw graphs of the sine and modulus functions and explain the humps. | ||
Spherical Triangles on Very Big Spheres | Find out about spherical triangles and decide if telecoms engineers need to know about such things. | ||
Taking Trigonometry Seriesly | Look at the advanced way of viewing sin and cos through their power series. | ||
Complex numbers | A nice introduction to complex numbers, including many exercises for the reader. | ||
More on the way | More on the way | ||
Vectors | Spotting the Loophole | A visualisation problem in which you search for vectors which sum to zero from a jumble of arrows. Will your eyes be quicker than algebra? | |
Starting with two basic vector steps, which destinations can you reach on a vector walk? | |||
Follow Ulaf, Vicky and Wilber on a vector walk to determine the locations nearest to the origin. | |||
Air Routes | An application of vectors and scalar products in a very practical setting. | ||
Explore the meaning of the scalar and vector products and see how the two are related | |||
Vectors and matrices | What quadrilaterals can you transform this pair of squares into? | ||
Explore the mathematics of matrix transformations with these 10 individual questions. | |||
Explore the algebraic and geometric properties of matrices with these 5 individual questions. | |||
Crystal Symmetry | Use vectors and matrices to explore the symmetry properties of Caesium Chloride. | ||
Explore how matrices can fix vectors and vector directions.? | |||
Can you make matrices which will fix one lucky vector and crush another to zero? | |||
Numerical methods | Root Hunter | In this short problem, try to find the location of the roots of some unusual functions by finding where they change sign. | |
Building Approximations for Sin(x) | Build up the concept of the Taylor series. | ||
Decision making and algorithms | Testing Strategy | Investigate ways in which you could implement a scoring system for a multiple choice test. | |
. | . | . |
If a is the radius of the axle, b the radius of each ball-bearing, and c the radius of the hub, why does the number of ball bearings n determine the ratio c/a? Find a formula for c/a in terms of n.
Bricks are 20cm long and 10cm high. How high could an arch be built without mortar on a flat horizontal surface, to overhang by 1 metre? How big an overhang is it possible to make like this?
The shortest path between any two points on a snooker table is the straight line between them but what if the ball must bounce off one wall, or 2 walls, or 3 walls?