Instructional Video29:43
Curated Video

Interior angles of a polygon

Pre-K - Higher Ed
Pupil outcome: I can find the interior angle of any polygon. Key learning points: - Any polygon can be split into triangles. - Using these triangles you can demonstrate the rule for the interior angle sum of a polygon. - A missing...
Instructional Video29:30
Curated Video

The sum of the interior angles of any triangle

Pre-K - Higher Ed
Pupil outcome: I can demonstrate and prove that in a triangle, the sum of the interior angles is 180°. Key learning points: - By considering a number of different triangles you can demonstrate facts about the angles in triangles. - The...
Instructional Video29:37
Curated Video

Pythagoras' theorem in context

Pre-K - Higher Ed
Pupil outcome: I can use and apply Pythagoras' theorem to solve problems in a range of contexts. Key learning points: - Within context, it can be difficult to initially identify whether Pythagoras' theorem can be used. - Pythagoras'...
Instructional Video30:14
Curated Video

Understanding the centre of rotation

Pre-K - Higher Ed
Pupil outcome: I can understand the minimum information required to fully describe a rotation. Key learning points: - The centre of rotation can be on a vertex of the object . - The centre of rotation can be lying inside the object . -...
Instructional Video30:58
Curated Video

Constructing a right-angled triangle given the length of the hypotenuse and one other side length

Pre-K - Higher Ed
Pupil outcome: I can construct a right-angled triangle given the length of the hypotenuse and one other side length. Key learning points: - The shorter side can be drawn accurately with a ruler - The perpendicular through the end point...
Instructional Video30:23
Curated Video

The tangent at any point on a circle is perpendicular to the radius at that point

Pre-K - Higher Ed
Pupil outcome: I can derive and use the theorem: the tangent at any point on a circle is perpendicular to the radius at that point. Key learning points: - A theorem is a statement that can be demonstrated to be true by accepted...
Instructional Video30:53
Curated Video

Ratios in line segments on coordinate axes

Pre-K - Higher Ed
Pupil outcome: I can use ratios to divide a line segment and find the coordinates of a point on the line. Key learning points: - Your knowledge of ratios can be applied here. - The ratio can be applied to both the x and y distances. -...
Instructional Video31:31
Curated Video

Constructing a triangle given two side lengths and the angle between them using a compass

Pre-K - Higher Ed
Pupil outcome: I can construct a triangle given two of the required side lengths and the size of the angle between them. Key learning points: - The first side can be drawn accurately with a ruler - The compass should be used to indicate...
Instructional Video32:35
Curated Video

Parallel and perpendicular lines on coordinate axes

Pre-K - Higher Ed
Pupil outcome: I can solve problems involving parallel/perpendicular lines on coordinate axes. Key learning points: - Parallel lines have the same gradient. - The product of the gradients of two perpendicular lines is -1 - Your knowledge...
Instructional Video33:39
Curated Video

Checking and securing understanding on chains of reasoning with angle facts

Pre-K - Higher Ed
Pupil outcome: I can reason mathematically using my knowledge of angle facts. Key learning points: - Alternate, corresponding and co-interior angles can be identified in diagrams containing pairs of parallel lines. - Facts about angles...
Instructional Video32:10
Curated Video

Checking and securing understanding of congruent triangles (SSS)

Pre-K - Higher Ed
Pupil outcome: I can understand and use the criteria by which triangles are congruent (SSS). Key learning points: - By knowing the three side lengths of the triangle and its image, you can prove congruence. - If congruent, the same...
Instructional Video33:04
Curated Video

Checking and securing understanding of reflection

Pre-K - Higher Ed
Pupil outcome: I can describe a reflection and perform a given reflection on an object. Key learning points: - The line of reflection can be vertical/horizontal/diagonal. - The line of reflection may go through part of the object. - 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 Video32:57
Curated Video

Congruent triangles (SAS)

Pre-K - Higher Ed
Pupil outcome: I can appreciate and use the criteria by which triangles are congruent (SAS). Key learning points: - By knowing two side lengths and the angle between them in the triangle and image, you can prove congruence. - The angle...
Instructional Video34:09
Curated Video

Problem solving with loci and constructions

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of loci and constructions to solve problems. Key learning points: - Your knowledge of loci can be applied to your knowledge of bearings - Your knowledge of loci can be used to help solve area problems
Instructional Video34:59
Curated Video

Checking and securing understanding of area for standard shapes

Pre-K - Higher Ed
Pupil outcome: I can calculate the area of rectangles, triangles, parallelograms and trapeziums efficiently. Key learning points: - The formula for the area of a rectangle is bh - The formula for the area of a parallelogram is bh - The...
Instructional Video35:54
Curated Video

Advanced problem solving with loci and constructions

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of loci and constructions to solve problems. Key learning points: - Your knowledge of loci can be applied to your knowledge of bearings - Your knowledge of loci can be used to help solve area problems
Instructional Video35:00
Curated Video

Checking and securing understanding of advanced angle facts

Pre-K - Higher Ed
Pupil outcome: I can recognise equal corresponding angles, equal alternate angles and supplementary co-interior angles. Key learning points: - Corresponding angles are equal if they are on parallel lines and the same side of the...
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 Video37:34
Curated Video

Alternate angles

Pre-K - Higher Ed
Pupil outcome: I can recognise that a pair of parallel lines traversed by a straight line produces equal alternate angles. Key learning points: - Alternate angles can be identified in an arrangement of 3 line segments. - If two of the...
Instructional Video35:20
Curated Video

Securing understanding of angles from KS2

Pre-K - Higher Ed
Pupil outcome: I can confidently state the sums of the angles around a point and on a straight line. Key learning points: - The sum of angles at a point can be used to find missing angles. - The angle sum of a straight line can be used...
Instructional Video2:05
Curated Video

Geometry and Measurements: Geometric Transformation

K - 8th
By the end of this learning object, the student will be able to: Summarize the lesson.87618
Instructional Video2:13
Curated Video

Geometry and Measurements: The Translation of a Point and a Line Segment

K - 8th
By the end of this learning object, the student will be able to: Identify the translation of a point and a line segment.87118