Nuffield Foundation
Measuring Respiratory Quotient
How do scientists prove tiny living things respire? Young scientists build a respirometer and measure respiration rates in living creatures. By comparing the measurements of both plants and animals, they understand the similarities.
Curated OER
Benefits of Indoor Plants
Students diagram a plant. In this Science lesson, students explore the concept of photosynthesis focusing on the oxygen production. Students calculate the amount of plants needed to filter the air in their classroom.
Nuffield Foundation
Effect of Size on Uptake by Diffusion
Cell size is limited by the surface area to volume ratio, but why is this true? Scholars measure the surface area and volume of cubes before placing them into liquid. After a set amount of time, they measure the uptake by diffusion for...
Curated OER
Diffusion through Membranes
Students identify diffusion and its processes through experimentation and calculations. They also use a CBL and conductivity probe to measure the conductivity of various solutions and study the effect of concentration gradients on the...
Curated OER
Latin America and the Caribbean in the Classroom: The Economy and Trade
Students use the internet to gather information on daily exchange rates. They calculate the exchange rates between two countries by role playing they are going on vacation to these destinations.
Curated OER
Animal Skin
Students investigate the skin surface to body area ratios for different animals. In this seventh/eighth grade mathematics/science instructional activity, students explore heat transfer between an animal’s body and the...