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#### Inequalities - Using the signs correctly, listing integer results and inequalities on a number line

For KS3 or KS4 (particularly low ability).
"Crocodile eats the bigger number" using the signs correctly between two values, then between 2 sums, then with a little bit of simple algebra (with values of a, b and c given).
Listing the possible integer solutions of a simple inequality.
Representing inequalities on a number line, and writing inequalities down from a number line.
Quite a few answers to odd questions are done for them to help the students check their own approach as they go.

#### Scatter Graphs

KS3 and KS4/GCSE activities on Scatter Diagrams/Scatter Graphs.
Includes
* a cheat sheet that I print on A3 in colour to put on the desks for them to refer to (can also double as a classroom display
* a quick sorting activity where students pair up types of correlation to pictures of graphs and pairs of variables that would match each graph
* a worksheet where students decide which scenario must go with each graph, and give reasons, and a prompt sheet with some suggested generic reasons for those who need it
* some exam questions that I have edited a little to include parts asking students to identify types of correlation and describe the relationships in context

#### Properties of Numbers Displays

Doc and PDF formats.
Includes:
* Factors & Multiples (which I used by printing together onto A3 and laminating)
* Prime Numbers and Prime Factors (which I used by printing together onto A3 and laminating)
* Square Numbers (which I printed, sliced up into its individual squares, laminated, then sliced up again and stuck on the wall in sequence)
* Cube Numbers (did as above with the square numbers)

#### How Many Boxes Fit? (Relating to Enlargement and Area/Volume Scale Factors)

Short worksheet to prime students to think about how small boxes would physically fit inside a larger box, rather than simply work out the volume of each and divide to work out how many fit inside (which may not work if the boxes don't fit snugly).

#### Algebraic Substitution Introduction - Basic visual introduction

Basic visual introduction to both writing expressions and substituting in values. This uses the concept of a variable as a physical token that has some monetary value.
I've made it to use with some of my Year 11s who have some big gaps in their understanding so I'm going back to basics with them. I'm going onto solving equations from here so I'll add more when I build on this topic a bit later.

#### Polygons Classroom Display

4 posters with polygons up to a dodecagon, including annotations showing how they're each named.
Provided as Word and PDF documents.

#### Percentages of Quantities - Calculator Methods - inc Reverse Percentage Change and Compound Interest

Resources I made for an interview lesson (I got the job) with a mixed ability group that had a wide range of abilities. Starts with a RAG activity so students can select their own starting point, which can range from Changing Percentages to Decimals, to Compound Interest. Each worksheet is an explanation of the skill, some basic questions and then exam questions. Enough resources to easily last two or three lessons.
Presentation
Pre-Lesson RAG Activity
Percentages to Decimals
Percentages of Quantities
Percentage Change
Reverse Percentage Change
Compound Interest

#### Number Thermometer Display

A number thermometer for the wall going from 10 down to -10. I prefer to have a vertical number line rather than a horizontal one, as it feels much easier to explain numbers getting higher and lower if they’re going up and down.
A blank unlabelled thermometer is included too, so if you laminate before putting it onto the wall you can write different numbers on.

#### Light Ray Diagrams - Plane Mirrors

Worksheet (3 pages) and Homework (1 page) (with answers) for mirror diagrams, including the Law of Reflection (angles of incidence and reflection equal), and the concept of virtual images.
Includes measuring angles of incidence/reflection. Opportunity to have able students practice trigonometry to calculate exact values of these angles using SOHCAHTOA (my answers are to nearest 0.5 degree).
A corresponding presentation is free to use and embedded at physics.mrhatchard.co.uk in Section 4 (Waves).
Written for the Cambridge IGCSE Coordinated Sciences and Combined Sciences courses, but obviously a large content overlap with various GCSE courses also.

#### Reflection, Refraction, Diffraction

Worksheet (2 pages) and Homework (1 page) (with answers) for an introduction to reflection, refraction and diffraction of waves.
A corresponding presentation is free to use and embedded at physics.mrhatchard.co.uk in Section 4 (Waves).
Includes definitions, wavefront diagrams, explanations for refraction. Written for the Cambridge IGCSE Coordinated Sciences and Combined Sciences courses, but obviously a large content overlap with various GCSE courses also.