Part 1 of a 20 minute lecture which explains the root causes of 9/11.

The mutualism relationship between nodular bacteria and leguminous plant

In this video, the teacher explains the origins of silent letters in English words such as doubt, receipt, debt, plumber, aisle, and isle. This informative video sheds light on the fascinating history behind these silent letters and how...

In this video, the host explores the origins of words for colors. From black to white, and all the hues in between, he delves into etymology and uncovers interesting connections and historical influences. He also discusses the...

This video is answering the question of do all aquatic plants float.

This video explores five fun facts about aquatic plants.

This video explores five fun facts about soil erosion.

This video is answering the question of what is photosynthesis.

This video is answering the question of how do trees help the soil.

Students will learn how the structures of plants such as roots, stems, and leaves enable them to live and grow. Real-life applications show how these plant structures are useful sources of food, building materials and medicine. Other...

Plants possess a wide variety of structures that enable them to accomplish amazing things. This engaging series of videos investigates structures common to most plants and describes how these features enable them to survive. Familiar,...

In this video, the teacher explains how to find the zeros of a polynomial function using a graphing calculator. They demonstrate the process of long division to determine factors and use the quadratic formula to solve quadratic...

In this lesson, you will learn how to determine whether the solutions of a quadratic equation with no linear term are real or imaginary. By isolating the quadratic term and considering the square roots involved, you can determine if the...

In this video, the teacher explains how to determine the nature of the roots of a quadratic equation by examining the discriminant. The discriminant is the part under the square root in the quadratic formula, and its value can indicate...

We all know what numbers are 1, 2, 3, 4, 5, …. Including negative numbers -1, -2, -3, -4, -5, ... But did you know that mathematicians classify numbers into different types… into a number system. Let’s start at the top with real numbers....

A video created for, and aimed at primary school science students learning all about plants. This video explores how plants grow and the key elements they need.

In this video, we discuss the origin of the sciatic nerve from nerve roots L4-S3, its structure and branches, and basic disorders of the sciatic nerve.

NOTE: The "condition" sciatica is very general but is due to compressed roots...

In this lesson, students will learn how to find imaginary roots of quadratic equations using the square root property. They will review the vocabulary related to quadratic equations and the imaginary unit. Through examples and...

Students will explore the basic parts of a plant including the stem, roots, and leaves. The series of videos describes the functions of each of these plant parts using many real-world examples that students will recognize easily....

👉 Learn how to solve quadratic equations using the quadratic formula. A quadratic equation is an equation whose highest power on its variable(s) is 2. The quadratic formula is a formula which can be used to find the roots of (solve) a...

Upon viewing the Plant Parts video series, students will be able to do the following: Recognize that plants have many parts, and that each part performs specific functions. List many different parts of plants that we eat. Describe the...

Why do we lose our baby (milk) teeth? Where do our adult teeth come from, and how do we look after our gnashers?! Join me at Eureka! The National Children's Museum to learn all about our teeth and how to keep them clean!

Upon viewing the Plant Parts video series, students will be able to do the following: Recognize that plants have many parts, and that each part performs specific functions. List many different parts of plants that we eat. Describe the...

Plant Physiology and Chemistry Set: 7. This clip explains how light causes the release of the hormone auxin, which affects the growth and movement of plants.