Images

15 images of various instruments such as rain gauges, wind vanes and weather satellites used to inform us about the weather

10 images showing some scenes with coniferous and deciduous trees in the fall or autumn season

10 images of some coniferous and deciduous trees showing new growth in the spring season

9 images showing some scenes with coniferous and deciduous trees in the summer

10 images of various winter scenes showing some coniferous and deciduous trees in snowy conditions

Electricity demand changes constantly. Suppliers need to generate more electrical energy when demand is high, and less when demand is low.

What is the nitrogen cycle? How do human activities such as using fertilizer affect the nitrogen cycle? How can this cause greenhouse gases?

Teen brain development prepares teens for adulthood, but also affects their emotions.

Today, you know it's the same time everywhere in your time zone thanks to Universal Coordinated Time. But when humans used the Sun to tell time, they couldn’t tell time precisely.

Can your body be a source of electricity generation? Maybe, if you understand heat transfer. Explore this concept through a 2013 invention by a Canadian teen.

14 images of some plants such as carrots, cabbage and leeks whose roots, stems or leaves are used for food

This strategy helps students develop collaboration skills as they think about topics individually, in pairs and as a large group.

This strategy helps students reflect upon and assess a video.

This strategy helps students develop decision-making skills as they think about and discuss issues with the aid of a graphic organizer.

This strategy helps students to become familiar with vocabulary before reading or viewing unfamiliar material.