Blogs about Number

Blogs about Number

How to calculate speed using ratio notation

Whenever I teach how to calculate speed as a measure of distance and time I either use the formula or the triangle method.  In my experience most students are know about the triangle method from their science lessons.  For this reason I would have expected speed to appear either within the algebra or shape and measures strands of […]

Dividing with mixed numbers

Dividing with mixed numbers and top-heavy fractions is one of those lessons where students have to combine a lot of topics they have learned in previous lessons.  Equivalent fractions, mixed numbers, reciprocals and multiplying with fractions are all involved when dividing with mixed numbers. Division with fractions using the visual method The start of the […]

How to Visualise Dividing with Fractions

Students first learn how to divide with fractions in year 8.  In the past I’ve struggled with teaching how to visualise dividing with fractions in a way that students gain a conceptual understanding, especially when the written method is a relatively simple procedure. Dividing with integers is much easier to understand on a conceptual level, […]

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

How to connect factor pairs to other areas of maths Knowing how to find the factors of a number enables students to connect with topics such as prime, square and perfect numbers.  You can also link factors to area, perimeter and algebra.  I am sure there are many more.  The highest common factor for a […]

Importance of Place Value in Mathematics

Importance of Place Value in Mathematics Understanding place value is important because it helps you understand the magnitude of numbers.  Because of place value we know 30 is 10 times bigger than 3 which is a hundred times bigger than 0.03.   This would not have been possible with Roman Numerals as they do not have […]

Multiplying with Negatives

I like to teach multiplying with negatives in a similar way to how students learned multiplication at primary school.  As a quicker and more efficient form of long addition. This way students consolidate addition and subtraction with negatives and extend that to multiplication and later division. Multiplying with negatives -2 x 3 is three lots […]

Efficient Calculator Methods for Percentages Changes

Using efficient calculator methods for percentages changes can be a tricky experience for students. Sometimes because the numerical methods involved can overwhelm the visual concept but also because students often see two distinct methods. One with a calculator and one without. I wanted to teach my Year 9 group how to visualise a percentage change […]

An illustrative way of adding fractions

I have recently taken on a middle year 11 set who have not been able to get to grips with how to add and subtract fractions with different denominators so I decided to try an illustrative way of adding fractions. They're mostly aiming for grade C's so I am sure you can imagine good arithmetic […]