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Ron Barrow

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64 videos

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Circles and Tangents - 2 Theorems

13K views
11 years ago

Circle Theorems - Angle at the Centre

18K views
11 years ago

Upper and Lower Bounds 2 - dealing with calculations

7.7K views
11 years ago

Upper and Lower Bounds 1 - how to calculate them

59K views
11 years ago

The Angle in a Semicircle

21K views
11 years ago

Opposite Angles in a Cyclic Quadrilateral

8K views
11 years ago

Angles in the Same Segment of a Circle

60K views
11 years ago

Congruent Triangles 5 - The RHS (Right angle, Hypotenuse, Side) Rule

4.1K views
12 years ago

Congruent Triangles 4 - The AAS (Angle, Angle, Side) Rule

4.1K views
12 years ago

Congruent Triangles 3 - The SAS (Side, Angle, Side) Rule

17K views
12 years ago

Congruent Triangles 2 - The SSS (Side, Side, Side) rule

2.9K views
12 years ago

Congruent Triangles 1 - Introduction

1.8K views
12 years ago

Geometric Series - Proof of the Formula for the Sum of the First N Terms

42K views
12 years ago

Three More Constructions

862 views
12 years ago

Perpendicular Bisectors 1 - how to draw a perpendicular bisector with ruler and compasses only

4.1K views
12 years ago

Angle Bisectors 1 - Bisecting an Angle with ruler and compasses only

320K views
12 years ago

Arithmetic Series - Proof of the Sum Formula for the First n Terms

51K views
14 years ago

Surds (Radical Expressions) 5 - Rationalising the Denominator 2

3.9K views
14 years ago

Surds (Radical Expressions) 4 - Rationalising the Denominator 1

3.1K views
14 years ago

Surds (Radical Expressions) 3 - More basic rules for manipulating and simplifying.

2.6K views
14 years ago

Surds (Radical Expressions) 2 - Some basic rules for manipulating and simplifying.

2.1K views
14 years ago

Surds (Radical Expressions) 1 - What are Surds?

3.3K views
14 years ago

Indices (exponents, powers) 6 - Simple Exponential Equations

40K views
14 years ago

Indices (powers, exponents) 5 - Fractional indices

23K views
14 years ago

Indices (powers, exponents) 4 - Zero and Negative Indices

2.6K views
14 years ago

Indices (powers, exponents) 3 - Powers of powers

1.4K views
14 years ago

Moving Averages 2

1.5K views
14 years ago

Moving Averages 1

585 views
14 years ago

Frequency Polygons

5.9K views
14 years ago

Indices (exponents, powers) 2 - Division

1.1K views
14 years ago

Indices (exponents, powers) 1 - Multiplying

5.6K views
14 years ago

Simultaneous linear (systems of) equations in two variables - 2

7.5K views
14 years ago

Simultaneous linear (systems of) equations in two variables - 1a

1.9K views
14 years ago

Simultaneous linear (systems of) equations in two variables - 1

21K views
14 years ago

Route inspection and the Chinese Postman Algorithm

16K views
15 years ago

Nth Term of a Quadratic Sequence - difference method

37K views
15 years ago

Nth Term of a Cubic Sequence - difference method

55K views
15 years ago

Straight line graphs and equations 5 - finding equations of parallel and perpendicular lines 2

1.7K views
15 years ago

Straight line graphs and equations 4 - finding equations of parallel and perpendicular lines 1

2.2K views
15 years ago

Straight line graphs and equations 3

3.7K views
15 years ago

Straight line graphs and equations 2

2.6K views
15 years ago

Straight line graphs and equations 1

9.8K views
15 years ago

The nth term of a simple linear sequence - second version

6K views
15 years ago

Probability Tree Diagrams 2

165K views
16 years ago

Planar Graphs and Euler's Relationship

26K views
16 years ago

Proofs that K5 and K3,3 are not planar

109K views
16 years ago

The Alternate Segment Theorem

33K views
16 years ago

Lengths and angles inside cuboids (rectangular boxes)

71K views
16 years ago

Probability - Tree Diagrams 1

1.5M views
16 years ago

Rotations of shapes 1

18K views
16 years ago

6.2K views
16 years ago

46K views
16 years ago

157K views
16 years ago

Reflections of shapes

5.5K views
16 years ago

Algebraic Long Division 1

1.1K views
17 years ago

Cumulative Frequency 3 - Boxplots

7.7K views
17 years ago

Cumulative Frequency 2 - Median and Quartiles

34K views
17 years ago

Cumulative Frequency Diagrams 1

31K views
17 years ago

Inequalities and Regions of Graphs

30K views
17 years ago

Finding the nth term of a linear sequence

24K views
17 years ago

Prime Numbers - The Sieve of Eratosthenes

189K views
17 years ago

Circle Angles and Isosceles Triangles

10K views
17 years ago

Prime Factors 3 - LCM

1.1K views
17 years ago

Number Factors - all the factors of a number, primes, squares, cubes, perfect numbers

2.7K views
17 years ago

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