Instructional Video30:01
Curated Video

The angle in a semicircle is a right angle

Pre-K - Higher Ed
Pupil outcome: I can derive and use the theorem: the angle in a semicircle is a right angle. Key learning points: - A theorem is a statement that can be demonstrated to be true by accepted mathematical operations and arguments - Theorems...
Instructional Video29:03
Curated Video

Checking and securing understanding of bisecting an angle

Pre-K - Higher Ed
Pupil outcome: I can use the properties of a rhombus to construct an angle bisector. Key learning points: - A rhombus can be constructed from two congruent isosceles triangles - The diagonals of a rhombus bisect the angles - It is...
Instructional Video28:57
Curated Video

Problem solving with angles

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of angles to solve problems. Key learning points: - Problems can be solved using parallel line angle facts. - Problems can be solved using interior and exterior angles of polygons. - Problems can be...
Instructional Video29:00
Curated Video

Constructing rhombi

Pre-K - Higher Ed
Pupil outcome: I can use intersecting circles to construct rhombi from given lengths. Key learning points: - A rhombus can be created from two isosceles triangles. - An isosceles triangle can be constructed from a given base and side...
Instructional Video32:37
Curated Video

The angles in the same segment are equal

Pre-K - Higher Ed
Pupil outcome: I can derive and use the theorem: the angles in the same segment are equal. Key learning points: - A theorem is a statement that can be demonstrated to be true by accepted mathematical operations and arguments - Theorems...
Instructional Video33:43
Curated Video

Problem solving with circle theorems

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of circle theorems to solve problems. Key learning points: - Circle theorems can be used in situations involving circles - It is not always obvious that a circle theorem can be used - Sometimes you...
Instructional Video33:09
Curated Video

Length of a shorter side

Pre-K - Higher Ed
Pupil outcome: I can use Pythagoras' theorem to find the length of one of the shorter sides. Key learning points: - The sum of the squares of the two shorter sides equals the square of the longest side. - The difference between the...
Instructional Video32:18
Curated Video

Problem solving with polygons

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of polygons to solve problems. Key learning points: - Problems can be solved using parallel line angle facts. - Problems can be solved using interior and exterior angles of polygons. - Problems can...
Instructional Video34:46
Curated Video

Checking and securing understanding of perimeter for standard shapes

Pre-K - Higher Ed
Pupil outcome: I can calculate the perimeter of rectangles, triangles, parallelograms and trapeziums efficiently. Key learning points: - The perimeter of any polygon can be found by adding but this may be time consuming. - By considering...
Instructional Video34:40
Curated Video

Checking and securing understanding of properties of shapes

Pre-K - Higher Ed
Pupil outcome: I can identify a shape from its properties and state the properties of a given shape.

Key learning po
ints:
- Many shapes have similar p
roperties.
- It is not always clear which shape is being described so...
Instructional Video34:26
Curated Video

Plotting non-integer coordinates

Pre-K - Higher Ed
Pupil outcome: I can describe and plot coordinates, including non-integer values, in all four quadrants. Key learning points: - Coordinates with any values can be plotted. - Coordinates can be described in all four quadrants. - Shapes...
Instructional Video34:17
Curated Video

Using the sum of the interior angles of a triangle

Pre-K - Higher Ed
Pupil outcome: I can use the fact that the interior angles of any triangle sum to 180° to find the size of missing angles. Key learning points: - Missing angles in triangles can be found using the angle sum. - Missing angles in triangles...
Instructional Video35:22
Curated Video

Proving or disproving a statement

Pre-K - Higher Ed
Pupil outcome: I can appreciate what constitutes the proof of a statement and what is required to disprove. Key learning points: - Substituting values can reveal whether the conjecture is wrong. - This is referred to as disproving. - A...
Instructional Video35:00
Curated Video

Checking and securing understanding of interior angles

Pre-K - Higher Ed
Pupil outcome: I can find the interior angle of any regular polygon or deduce the interior angle of an irregular polygon. Key learning points: - Any polygon can be split into triangles. - Using these triangles you can demonstrate the...
Instructional Video36:30
Curated Video

Constructing triangles

Pre-K - Higher Ed
Pupil outcome: I can use intersecting circles to construct triangles from given lengths. Key learning points: - A construction is an accurate drawing made using geometrical properties. - A scalene triangle can be constructed using...
Instructional Video11:19
Curated Video

Circle Proofs (Arc and Angle Relationships)

6th - Higher Ed
How do you prove circle theorems? In this video, we perform some "lazy" proofs that justify some of the relationships like the relationship between an inscribed angle and a central angle, the angle formed by intersecting secants, the...
Instructional Video3:36
Curated Video

Learn Important Trigonometry Concepts!

9th - Higher Ed
Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...
Instructional Video10:08
Curated Video

Learn Trigonometry & Circles Together!

9th - Higher Ed
Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...
Instructional Video4:29
Wonderscape

Finding the Perimeter of a Triangle: Simple Steps and Applications

K - 5th
To determine the perimeter of a triangle, you simply add the lengths of its three sides. Whether it’s a scalene triangle with different side lengths, an isosceles triangle with two equal sides, or an equilateral triangle where all sides...
Instructional Video2:47
Wonderscape

Understanding Triangles: Types, Properties, and History

K - 5th
Triangles have unique properties that define their shape, sides, and angles. They can be categorized based on their sides: scalene (all sides different), isosceles (two sides equal), and equilateral (all sides equal). Throughout history,...
Instructional Video5:46
Curated Video

Let's Talk about Triangles

K - 8th
Mr. Addit describes the four main types of triangles and explains what makes each type unique. He models drawing the four different triangles.
Instructional Video7:29
Curated Video

Review for You: Classifying Lines, Angles, and Triangles

K - 8th
Mr. Addit reviews points, lines, angles, and triangles and how to classify them.
Instructional Video2:01
Curated Video

GCSE Maths - Types of Triangle #100

9th - Higher Ed
This video covers the properties you need to know about the 4 types of triangles, namely equilateral triangles, isosceles triangles, right-angle triangles and scalene triangles.



This video is suitable for maths courses...
Instructional Video8:02
Curated Video

GCSE Maths - 5 Angle Rules to Know #116

9th - Higher Ed
This video covers the 5 most basic angle rules and then goes through a sample exam questions. The angle rules we cover are:

- Angles in a triangle add to
180°
- Angles on a straight line ad
d to 180°,
- Angles in a...