Standard Form and Orders of Magnitude
The numbers 7,200,000,000 and 0.0000000072 contain almost the same significant digits but represent vastly different scales. Open Full Article...
Home schooling resources for children and parents.
Explore Number and Arithmetic | Lenara Learning
Maths develops accuracy, reasoning and confidence with patterns, quantities and relationships. Within Maths, this Number and Arithmetic category focuses on place value, calculations, factors, multiples, powers and efficient written and mental methods. The online lessons are written for curious children and teenagers, with clear explanations that introduce important ideas without assuming specialist knowledge.
Learners can build subject vocabulary, examine useful examples and connect number and arithmetic to wider questions across school subjects and everyday life. Each lesson aims to explain not only what happens, but how we know and why the topic matters.
The category encourages learners to ask questions, compare evidence and recognise where an answer depends on context, interpretation or further investigation. Difficult concepts are broken into manageable steps so that learners can develop understanding rather than simply memorising facts.
Whether the subject is being studied as part of home education or home schooling, used for revision or explored through personal interest, these lessons support independent thinking and confident discussion. New material can be added as the collection develops.
Browse the lessons below to start learning.
The numbers 7,200,000,000 and 0.0000000072 contain almost the same significant digits but represent vastly different scales. Open Full Article...
Two different-looking calculations, 299 + 458 and 300 + 458 − 1, both equal 757. Open Full Article...
What makes 24 a factor of some numbers but a multiple of others? Open Full Article...
Place value explains how a digit gains meaning from its position in a number. The same digit can represent a very large amount or a tiny fraction of one. Open Full Article...
A temperature of -3°C is warmer than -8°C because -3 is higher on the number line. Open Full Article...