The video discusses a required practical activity from the chemistry specification, which is an experiment to investigate how increasing the concentration of a reactant affects the rate of the reaction by observing a precipitate. The...

0:22 - riddle #1 - the falling wooden and iron balls 1:54 - answer to riddle #1 4:20 - simone asks me a question about transistors! 5:40 - riddle #2 - the boat/rock puzzle

Some sports attract tall athletes and some are dominated by athletes with a shorter stature. The study of allometry investigates how strength scales with height. According to science, what are the reasons that certain sports attract tall...

In this lesson you will learn how to prove the Pythagorean Theorem by using similar triangles.

In this video, the teacher explains how to find missing measures in triangles using congruence and similarity criteria. They cover different congruence criteria, such as side-side-side and angle-side-angle, as well as similarity criteria...

👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...

In this video, students learn how to determine the best deal by comparing equations that represent the proportional relationship between the total cost and the number of items. They are taught to find the unit cost by dividing the total...

In the recent New Zealand Election, Prime Minister Jacinda Ardern’s Labour party came away with almost a majority of the vote, but from this, they will get an absolute majority in Parliament, so how did they manage this and turn 49% into...

Your friends might believe that Physics is dry and boring, but we’re going to prove them wrong! In subtopic 1, we’ll design theme park rides, such as rollercoasters and the rotor (aka the gravitron). Then, in subtopic 2, we’ll journey...

The purpose of this exercise is to automate a temperature control process with an LSTM network. The LSTM network is trained from a PID (Proportional Integral Derivative) controller or a Model Predictive Controller (MPC). LSTM (Long...

👉 Learn how to solve for an unknown measure using parallel sides. When two parallel lines are cut by a transversal, there are some congruents angles that are formed. Some of the congruents angles formed include the corresponding angle,...

This video dissects the mechanism by which the Pancreatic β-cells sense blood glucose levels and secrete a proportional amount of insulin through negative feedback.<br/>

👉 Learn how to solve for an unknown measure using parallel sides. When two parallel lines are cut by a transversal, there are some congruents angles that are formed. Some of the congruents angles formed include the corresponding angle,...

In this video, the teacher explains how to prove the similarity of triangles algebraically using ratios of corresponding sides. The lesson begins by reviewing the concept of proportionality and then applies it to triangles. The teacher...

👉 Learn how to determine whether two triangles are similar given the coordinate points of the vertices of the triangle. Two triangles are said to be equal when the corresponding angles of the triangles are congruent (equal) or when the...

Gravity is a heart-warming story of attraction. These farm animals would fall for each other even if the laws of Physics stop working! This lesson will formally revisit the gravitational force (from year 11), focusing on Newton’s Law of...

In this video lesson, we cover proportional relationships and slope, including how to graph equations and interpret slope in the context of a problem. We also discuss comparing relationships and using different representations to...

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...

👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...

👉 Learn how to determine whether two triangles are similar given the coordinate points of the vertices of the triangle. Two triangles are said to be equal when the corresponding angles of the triangles are congruent (equal) or when the...

Learn how to solve with similar polygons. Two polygons are said to be similar if the corresponding angles are congruent (equal). When two polygons are similar the corresponding sides are proportional. Knowledge of the length of the sides...

👉 Learn how to find the missing measure of a segment. A segment is a line that has two endpoints. A segment can be subdivided into several portions. The length of the segment is the sum of all the sub-divisions of the segment. Thus, when...

👉 Learn about dilations. Dilation is the transformation of a shape by a scale factor to produce an image that is similar to the original shape but is different in size from the original shape. A dilation that creates a larger image is...

In this video, the teacher explains how to determine if two triangles are similar under dilation. They review the properties of dilation and similar figures, such as proportional corresponding sides and congruent corresponding angles.