# Blogs about Teaching Number Based Topics

### Sum of a Geometric Series for A-Level Mathematics

Explore geometric series in this concise 10-minute video, ideal for A-Level students and teachers.

### Applying the Rules of Indices in A-Level Mathematics

This blog offers A-Level math teachers a guide on applying rules of indices.

It covers basics, misconceptions, and a four-part lesson with key questions.

### Multiplying and Dividing Numbers by 0.1 and 0.001: A Guide for Key Stage 3 Teachers

Learn how to teach students about multiplying and dividing numbers by 0.1, 0.01 and 0.001 using the place value table.

### Dividing with mixed numbers

How to teach dividing with fractions and mixed numbers.

### Add and Subtract with Numbers in Standard Form

How to teach adding and subtracting with numbers in standard form.

### Calculating a Reverse Percentage

Using ratios to calculate the original amount after a percentage change.

### How to Write 3 Part Ratios

How to teach calculating 3-part ratios.

### Sharing an Amount to a Given Ratio

How to teach sharing an amount by a given ratio.

### Teaching Reciprocals of Numbers and Terms

How to teach working out the reciprocal of integers, fractions, decimals and mixed numbers.

### Problem Solving with Place Value

Connecting permutations, number properties and money to deepen students understanding of place value.

### Multiplication and Division Rule of Indices

Using the rules of indices students learn how to evaluate expressions in index notation.

### Modelling Direct Proportion

How to teach modelling direct proportion.

### Problem Solving with Compound Percentages

Problem solving lesson real life compound percentages.

### Rounding to a significant figure

How to teach rounding to a significant figure using place value.

### Converting Between Fractions, Decimals and Percentages

How to teach converting between fractions, decimals and percentages.

### How to Simplify Surds

How to teach simplifying surds.

### How to calculate speed using ratio notation

How to teach calculating speed using ratio notation.

### How to Visualise Dividing with Fractions

How to teach visualising diving with fractions.

### 5 ways how to connect factor pairs to other areas of maths

5 ways how to connect factor pairs to other areas of maths

### Mr Mathematics Blog

#### Problem-Solving with Angles in Polygons

How to teach problem solving with angles in polygons through scaffolding.

#### The Sum to Infinity of Geometric Series – A-Level Maths Tutorial

Explore geometric series in our A-Level Maths tutorial. Perfect for students/teachers, with resources to download at mr-mathematics.com.

#### Sequences and Series

Edexcel A-Level Mathematics Year 2: Pure 2: Algebraic Methods