#### How to calculate Standard Deviation from a Grouped Frequency table.

For Secondary and FE learners. This lesson has 2 worked examples which calculate the final column on a grouped frequency table and then calculate the Standard Deviation.

#### An introduction to Mean and Standard Deviation of a sample

For Secondary and FE learners. This introduces Mean and Standard deviation of a sample with terminology using a step-by-step approach with worked examples throughout.

#### Probability - an introduction with exercises (choosing cards, throwing dice etc)

This presentation introduces probability with examples and definitions of the terminology used. It uses coin tossing, choosing cards and throwing dice for demonstrations and there are questions throughout for learners to try with solutions.

#### Powers and indices - squaring numbers, cubing and beyond, and how to use a calculator

This presentation introduces power numbers, showing what square numbers look like, and cube numbers look like. It explains how to raise a number to a power, and demonstrates using a calculator to find the answer. Worksheet with 12 questions at the end with solutions

#### Speed, distance, time - Using the formula to calculate, explains the units.

This presentation shows the DST formula and how to use it to calculate each. It explains the units used in each. There are exercises on each of Speed, Distance and Time.

#### How to draw a Histogram from a grouped frequency table and estimate the Mode from it.

This presentation demonstrates how to draw a histogram from a grouped frequency table. It then demonstrates how to estimate the mode from a histogram. There are 5 practice questions for learners to try with solutions.

#### Calculating the mean from grouped frequency table - terminology and step by step example + exercises

This presentation takes learners through the process of calculating the mean from a frequency table, then a grouped frequency table. It introduces terminology like Mean and sigma. There are 6 questions (partially complete tables) for learners to try with solutions. Printable versions of these are at the end of the presentation.

#### Fractions to decimals to percentages - how to go from one to another

This presentation shows how to turn fractions to decimals (recommend using a calculator) which gives learners a better idea of how fractions work. Then moves on to turning decimals into percentages, then fractions to percentages. There are then examples of equivalent fractions and percentages to make some percentages easier to calculate. There are 4 printable worksheets at the end of the presentation which tie in with the presentation and lesson.

#### An introduction to basic formulae: area of triangle, phone bill, converting temperatures.

This introduces basic formulae starting with the area of a triangle, moving on to a basic phone bill formula, then onto converting temperature - Fahrenheit to Celsius and Celsius to Fahrenheit. There are questions to try throughout.

#### Perimeter and area - rectangles, triangles, composite shapes.

This presentation shows perimeter and area of rectangles, triangles and composite rectangular shapes. It has many examples throughout with animations which reveal answers to each. I use this with my construction students.

#### How to express one number as a percentage of another with examples and questions with solutions

This presentation shows how to express a number as a percentage of another e.g. test scores etc. It explains the steps through worked examples, there are 8 questions with worked solutions to each.

#### Converting between metres, centimetres and millimetres

This gives an idea of what basic metric measurements look like, how to convert between them (with conversion charts) and a number of questions at the end with answers.

#### Volume of basic shapes: Cuboid and triangular prism

This presentation starts with volume of a basic cuboid, then volume of triangular prisms with examples. I use this with my construction students for calculating roof space volumes.

#### Step-by-step worked examples of Compound Interest

This presentation uses the compound interest formula, with 2 worked examples shown step-by-step.

#### An introduction to ratio - simplifying and splitting with examples throughout.

This presentation introduces ratio, with lots of examples throughout e.g. making cement, salad dressing, mixing hair colourant. It also has a number of examples of splitting ratio.

#### Costing in construction - calculating perimeter and area then costing materials e.g. flooring etc

This presentation uses a basic floor plan as an example with questions throughout, calculating perimeter, area then costing materials for each e.g. flooring, skirting, floor tiles etc. A good starter for showing applications of perimeter and area.

#### Probability - an introduction with exercises (choosing cards, throwing dice etc)

This presentation introduces probability with examples and definitions of the terminology used. It uses coin tossing, choosing cards and throwing dice for demonstrations and there are questions throughout for learners to try with solutions.

#### An introduction to Mean and Standard Deviation of a sample

For Secondary and FE learners. This introduces Mean and Standard deviation of a sample with terminology using a step-by-step approach with worked examples throughout.

#### Simple percentages - 10%, 20%, etc. With exercises and worksheets

This presentation recaps dividing by 10 to calculate 10%, then expands to calculate 20%, 25% and 50% with other mixed questions. There are printable worksheets at the end of the presentation with practice questions throughout.

#### How to calculate Standard Deviation from a Grouped Frequency table.

For Secondary and FE learners. This lesson has 2 worked examples which calculate the final column on a grouped frequency table and then calculate the Standard Deviation.

#### Percentages using a calculator - step by step instructions on how to input Percentages

This presentation has step by step instructions on how to input percentages into a calculator with worked examples and a number of exercises throughout. Also introduces percentages which contain fractions and how to input a percentage as a decimal. Printable exercises at the end of presentation.

#### Foreign Exchange introduction

Introduces the idea of exchanging currency with examples

#### Payslips and Overtime

Introduces learners to the idea of a payslip and what it contains. Good for class discussions about paying tax and NI. Then gives worked examples of calculating and basic weekly wage with overtime.