Expose your class to the steps of the nitrogen cycle with this short clip. Colorful computer imagery and animation explain how nitrogen travels from the atmosphere as a gas into plants and soil, where bacteria convert it into nitrates....

In this exploring the processes from seed to reproduction of a plant online interactive worksheet, students read a passage explaining the plant life cycle and answer multiple choice questions about what they read. Students choose 8 answers.

Explore a day in the life of a water droplet. An interactive infographic helps scholars learn how water cycles work from precipitation all the way around to condensation. Learners hover over each step of the cycle to read more as they...

Two very hip teenagers walk through the forest collecting evergreen cones. One teaches the other about gymnosperms: cycads, ginkoes, gnetophytes, and conifers. He tries to convince his friend how amazing cones are, while she defends...

In this life cycles activity, students compare the life cycles of 2 different species and answer short answer questions about them. Students can choose the species to compare and then answer 6 questions.

In this life cycle of a frog worksheet, students fill in the blanks to paragraphs about the life cycle of a frog using a word bank. Students fill in 13 blanks total.

Explore the farm to table experience in a fast-paced lesson on gardening. The activity uses image sequencing to help young scholars understand the process of growing food from seed to harvest. Academics also participate in group...

Leaves fall off the tree in the autumn, but why do they change colors? The interactive covers the role of chlorophyll and photosynthesis. It also explains both carotenoids and anthocyanins.

Is it reasonable for us to alter genes in plants to make them more nutritious and better tasting? Is it reasonable for us to alter genes to make babies smarter or better looking? The human genome contains millions of gene switches for...

Fertilizer can mean the difference between a profit and a loss. Scholars use an online interactive to explore the effects of fertilizing in agriculture. Given information about the nitrogen levels in the soil, they decide the fertilizer...

For this biology worksheet, learners read about the parts of plant seeds and look at a seed diagram. They read about the roots, endosperm, embryo, and the process of germination. They answer 8 online multiple choice questions based on...

In this ecology vocabulary exercise:  wetlands worksheet, students read the definitions of 8 words, then categorize a species found in a wetland in their region.  This page has numerous links to helpful web resources.

In this ESL question formation worksheet, students read about subject and object questions, then read statement and write questions for words underlined and match pictures with words from text.

In this bluebirds worksheet, students categorize bluebird species found in their state and define vocabulary related to it. Students complete 6 vocabulary words.

In this bats worksheet, learners click on the links in the questions about bats to find the answers to the questions and then come back and answer the questions. Students answer 19 questions total.

In this ecology activity, students read the vocabulary words and then categorize a species found in a field, meadow, or fencerow in their state or region. Students complete 6 problems.

In this North American butterflies and moths worksheet, students click on the links in the questions about North American butterflies and moths of fields, meadows, and fencerows to find the answers to the questions and then come back and...

In this caterpillar worksheet, students look at the picture of the caterpillar and identify what kind it is. Students then decide how to take care of it.

In this birds instructional activity, students click on the links to learn about the birds of the Wetlands and answer short answer questions about it. Students complete 7 questions total.

Interactive learning activity examines the global carbon cycle and describes the exchanges of carbon between the Earth's atmosphere, oceans, land and fossil fuels.

Reproduction in Plants and Animals. The ability to produce more organism similar to themselves is a very important characteristic of all living organisms. The process by which they do so is known as reproduction. [0:21]

The New York Times Learning Network has developed interactive & printable crossword puzzles. The theme of this puzzle is Animals: Life Cycle.

This segment covers the lifecycles of various plants and animals. Illustrations begin with the production of a gamete and describe the processes that occur throughout the lifespan of living creatures.

Knowsy Nina discovers what food plants need in order to grow in this episode! [5:00]