In this inquiry lab, students design and conduct simple experiments using elodea and Bromothymol blue to determine whether plants consume or release carbon dioxide in the process of photosynthesis. Students will record their data which will be used to conclude whether carbon dioxide was consumed or released by the elodea.

This activity is a field investigation where students use a dichotomous key to properly identify trees in our schools nature center.

In this activity about sleep rhythms (on page 25 of the PDF), learners will investigate how changing the time they go to bed impacts their own sleep patterns. For one night, learners will go to bed one hour earlier than usual. They will observe and record any impacts that this change has on their abilities to fall asleep, and on their usual wake times the next morning. This lesson guide includes background information, setup and management tips, extensions and a handout.

This activity is a classroom experiment where students gather data on which foods contain starch. They use observation and develop their own hypothesis to create a question they would like to discover about starches.

During the leaf activities the students will compare, contrast, classify, categorize, identify attributes, learn art techniques and learn about the importance of trees.

This activity is a field investigation where students gather information on a tree. Based on the information gathered and student interest, students will develop and carry out an investigation.

This activity is a field investigation where students explore different types of trees and identify them using leaves and classification tools.

In this biology investigation, students will make observations of the growth of bean seeds to determine what plants need to live and grow in a healthy way.

This activity is based on observations of mealworms form a question and make decisions as to the design of an investagation. Students use data collected to make a conclusion to their questions.

In this video segment from Greater Boston, learn about conflicting theories regarding the cause of autism.

Spreadsheets Across Curriculum module/Introductory chemistry course. Students build spreadsheets to examine unit conversions between the metric and English systems. Spreadsheet level: Beginner.

This formative assessment item uncovers misconception and student ideas about classifications of mammals. It will uncover how students think when classifying animals. The probe is aligned to the National Science Education Standards. Information is provided for instructional suggestions and background information.

This activity is designed to further develop students' understanding of the characteristics of insects. Students will be sorting insects from non-insects that they themselves find in a sample of pond water.

Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

Students learn about complex networks and how to use graphs to represent them. They also learn that graph theory is a useful part of mathematics for studying complex networks in diverse applications of science and engineering, including neural networks in the brain, biochemical reaction networks in cells, communication networks, such as the internet, and social networks. Students are also introduced to random processes on networks. An illustrative example shows how a random process can be used to represent the spread of an infectious disease, such as the flu, on a social network of students, and demonstrates how scientists and engineers use mathematics and computers to model and simulate random processes on complex networks for the purposes of learning more about our world and creating solutions to improve our health, happiness and safety.

This lesson will introduce students to environmental issues. Students will recognize environmental opinions and perspective, which will help them define themselves and others as either preservationists or conservationists. Students also learn about the importance of teamwork in engineering.

This video, adapted from material provided by the ECHO partners, provides a portrait of IŰ__ŒóíŠupiaq whaling as a community activity, as told through the story of one hunt.

A "Just in Time Teaching" question about he scientific method with follow-up class room activities and an exam question.

This article sets an historic context for Jules Verne's novel Captain Hatteras (1866), and presents an overview of day-to-day survival on the typical 19th century arctic voyage portrayed in this fictional account.

This lesson helps students explore the functions of the kidney and its place in the urinary system. Students learn how engineers design instruments to help people when kidneys are not functioning properly or when environmental conditions change, such as kidney function in space.