What use is a quadratic equation? A quadratic equation is an equation where at least one term is squared. It looks something like this: ax² + bx + c or c = ax² + bx .. and students are asked to solve, factorise or draw it. Quadratics are usually the most dreaded of homework assignments. I'm sure many students have wondered about their use. Will they ever be useful - or is a … [Read more...]
Quick Maths Tests – higher level
A selection of quick maths tests that feature around the site .. all in one place. The quick maths tests should be good for revision and only take around 10 minutes...ish. Some have attached posts although there are (quite a ) few that need either a YouTube video or an explanation. If you visit the YouTube channel, please subscribe to be notified when I post any additional … [Read more...]
How to work out the volume of a cone and hemisphere
How to work out the volume of a cone and hemisphere - or an ice cream! These are really higher level grade A / B GCSE questions but: - the formulas are given on the exam paper (although you should learn them :-)) and - if you work through logically it should be straightforward. The questions usually involve calculating a volume of a cone, sphere or hemisphere. There might … [Read more...]
Why and how to work out volume of a prism
Learning how to work out volume of a prism can be very important for all sorts of applications - mainly in manufacturing and transportation. A 'prism' is a shape with a constant cross section, such as a cardboard box. It basically means that if you cut the prism in half the shape will be the same in the middle: Try the Quick Test volumes of 3D shapes To work out the … [Read more...]
Why and how to calculate density
How to calculate density can be very important in design and construction.. Density is measured by how much something weighs for a fixed volume, usually a 1cm cube. It's a measurement that compares different materials of the same size. This is a level C GCSE question: "An 8cm solid hexagonal prism has a cross-section area of 15cm squared. The prism is made from wood … [Read more...]