The task sounds like it should be pretty easy, but the Stroop task is a fantastic, and very well studied, example of how your brain’s automatic processing can trip you up!

Euclid of Alexandria revolutionized the way that mathematics is written, presented or thought about, and introduced the concept of mathematical proofs. Discover what it takes to move from a loose theory or idea to a universally...

In this shorts video we will answer a standardized math test question using similarity. We will begin by identifying key information given in the problem and by defining similar figures. We will use this definition to identify the...

A video entitled "Similar by AA Criterion" which clarifies that if two pairs of corresponding angles are congruent, then the triangles are similar.

Howcast - Learn how to use body language to flirt in this Howcast video.

Howcast - Learn how to read your own body language in this Howcast video.

Pupil outcome: I can explain how two congruent triangles can arranged to compose a parallelogram. Key learning points: - The area of a triangle is equal to half the area of the parallelogram you create from 2 congruent triangles. - Any...

Pupil outcome: I can solve problems involving missing coordinates Key learning points: - Coordinate grids are not always presented with grid lines, and the axes are not always fully-labelled. - When this is the case, it is essential to...

Pupil outcome: I can describe how an object has moved or changed. Key learning points: - A congruent shape has not changed size - Two shapes can be congruent even if one has been reflected or rotated - An image can be described in terms...

Pupil outcome: I can translate objects from information given in a variety of forms. Key learning points: - It can be helpful to choose a vertex and translate that. - Once all the vertices have been translated, the image can be drawn. -...

Pupil outcome: I can describe a translation using column notation and carry out the translation of a point. Key learning points: - It can be helpful to choose a vertex and translate that. - Once all the vertices have been translated, the...

Pupil outcome: I can accurately construct circles and triangles using a pair of compasses and protractor respectively. Key learning points: - A pair of compasses can be used to draw a circle with a particular radius. - A ruler and...

Pupil outcome: I can understand and use the criteria by which triangles are congruent (RHS). Key learning points: - For a right-angled triangle, you need the hypotenuse and one other side length to prove congruence. - Right-angled...

Pupil outcome: I can understand and use the criteria by which triangles are congruent (ASA). Key learning points: - By knowing two angles and the length between them in the triangle and image, you can prove congruence. - The angle pairs...

Pupil outcome: I can translate, reflect and rotate a shape. Key learning points: - Translation, reflection and rotation produce an image congruent to the object. - Translation involves moving the shape. - Rotation involves turning the...

Pupil outcome: I can differentiate between shapes which are congruent or similar or neither. Key learning points: - If two shapes are congruent, then they are similar. - Congruent shapes have a scalar of one. - A ratio table can be a...

Pupil outcome: I can use the properties of a rhombus to construct a perpendicular to a given line through a given point. Key learning points: - A rhombus can be constructed from two congruent isosceles triangles. - This can be used to...

Pupil outcome: I can construct a triangle from two side lengths and an angle not between them. Key learning points: - The first side can be drawn accurately with a ruler - All triangles with these measurements in the same place are...

Pupil outcome: I can construct a triangle given two angles and the side length between them. Key learning points: - The side can be drawn accurately with a ruler - Both angles should be accurately measured with a protractor - Where the...

Pupil outcome: I can understand 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...

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...

Pupil outcome: I can construct a triangle given the three required side lengths. Key learning points: - The first side can be drawn accurately with a ruler - A pair of compasses should be used to indicate potential positions for the...

Pupil outcome: I can identify whether a shape has been transformed or not. Key learning points: - There are clues that can be looked for to determine if a shape has been transformed. - If the size has changed, one shape may be an...

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...