Resource Library

What is the Difference Between Accuracy and Precision?

K to 3, Grades 4 to 6, Grades 7 to 9, Grades 10 to 12

When we measure things, most people are only worried about how accurate, or how close to the actual value, they are. Matt Anticole explains what exactly precision is and how can help us to measure things better.

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Backgrounders

Specialized Cells of the Leaf System

Grades 7 to 9, Grades 10 to 12

Without leaves, there would not be life on Earth. Leaf size can vary from the tiniest leaf of the common water fern (Azolla filiculoides) that are just one mm in length, to the largest leaves of the raffia palm (Raphia regalis) measuring 25 meters in length. No matter the size, most leaves are adapted for photosynthesis. This is a very important process where plants convert light energy into sugars and oxygen.

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Backgrounders

Tropisms in Plants

Grades 7 to 9, Grades 10 to 12

One of the major differences between plants and animals is that plants cannot move from place to place to get away from an unfavourable environment or situation. But this does not mean that plants do not move at all. A tropism is plant movement in response to an external stimulus in the environment.

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Videos

Plant Growth in the Canadian Arctic

Grades 7 to 9

Explore Research at the University of Florida: Anna-Lisa Paul, a research associate professor of horticultural sciences, explains an aspect of her research in the space biology program.

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Videos

Plant Breathing Mechanism Discovered (Carnegie Institution)

Grades 10 to 12

A tiny, little-understood plant pore has enormous implications for weather forecasting, climate change, agriculture, hydrology, and more.

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Videos

Structure And Working Of Stomata (TutorVista)

Grades 10 to 12

Stomata (the word stomata means "mouth") are small pores found in the leaves of the plant that helps in gaseous exchange during photosynthesis and respiration.

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Videos

Why Tomatoes Are Fruits, and Strawberries Aren't Berries (SciShow)

Grades 4 to 6, Grades 7 to 9, Grades 10 to 12

Did you know that bananas are berries, but strawberries aren’t? A lot of thought goes into classifying fruits and vegetables, and it all has to do with anatomy.

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Videos

Tomato Seed Germination Timelapse with Macro lens

K to 3, Grades 4 to 6, Grades 7 to 9, Grades 10 to 12

Extreme close-up of germinating tomato seeds.

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Videos

Sexual Reproduction in Flowering Plants

Grades 4 to 6, Grades 7 to 9

Animated video offering a good visual introduction to pollination and fertilization, describing the role of the structures involved in these plant processes.

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Videos

Flower Reproduction

K to 3, Grades 4 to 6

A simple description of the plant processes of pollination and fertilization.

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Videos

Parts of a Plant

K to 3, Grades 4 to 6

This animation uses a tomato plant to learn about the parts of plants and their function.

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Videos

How Does a Seed Grow?

K to 3, Grades 4 to 6

A quick and simple, white-board animation of how a plant grows from a seed. The video introduces concepts of germination and photosynthesis. (2:11 min.)

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Videos

Living and Nonliving Things for Kids

K to 3

Learn the differences between living and nonliving things. Things which can grow, move, breathe and reproduce are called living things.

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Learning Strategies

Vocabulary Preview

K to 3, Grades 4 to 6, Grades 7 to 9, Grades 10 to 12

A Vocabulary Preview learning strategy is used to help students develop and increase their working vocabulary about a topic or inquiry by providing students the opportunity to identify and familiarize themselves with vocabulary before and during an inquiry or other learning experience.

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Learning Strategies

Vocabulary Evolution

K to 3, Grades 7 to 9

The Vocabulary Evolution learning strategy encourages students to reflect and revise their thinking about vocabulary words for a given topic.

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