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Upgrading Whey

Whey is a waste product from the cheese industry. In this experiment students upgrade whey, by converting the lactose into glucose and galactose, or by growing the microorganism K.lactis on agar containing whey.

Cheese companies are currently developing ways of upgrading the whey so that they can increase...

Fungal Inhibition

In this experiment students grow yeast on agar plates and look at the effect on growth of some common anti-fungal treatments, which are available to treat conditions such athlete's foot and thrush.

Antifungal products may be bought from a local pharmacist, for example, Canistan, Daktarin, Diflucan.

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Determining Doubling Time

As the number of cells in a microbial culture increases, turbidity increases. In this experiment students calculate doubling time and growth rate constant using absorbance as the measure of growth.

Turbidity is caused by suspended cells in the growth medium scattering light, and may be measured using a...

Determining Dry Weight

This experiment is a continuation of Determining Doubling Time. Students create a standard curve of absorbance against yeast concentration, and use this to determine the concentration of yeast produced over time.

The standard curve (dry mass, grams per litre) is generated from known concentrations of dried...

Solar Power for Exploration Challenge

From NASA, Solar Energy for Space Exploration is a problem-based learning activity. The project requires students to propose and defend a design to provide power to a lunar or Martian research base for six astronauts. To prepare for the final project, students investigate the variables that affect the operation of...

Space-based Astronomy Educator Guide

These resources from NASA look at why telescopes are put into space. Students build simple spectroscopes and telescopes to learn the answer to this question. This educator guide is divided into units of study that include science demonstrations, lesson plans and student sheets so that students may learn about Earth...

Routeway: Solving Constructional Problems

Produced by the Earth Science Teachers' Association, these resources examine how the properties of rocks and local geological features need to be considered when constructing roads.

Students investigate the properties of different building materials before looking at the influence of geology on route...

Wind Power

This booklet is part of the ‘Innovations in Practical Work’ series published by the Gatsby Science Enhancement Programme (SEP). One of the most important questions facing us all is how we will use the planet’s energy resources over the coming decades. Many people believe that wind power can make a vital...

Microscale Chemistry

This activity is provided by ASE and describes a novel way to conduct a number of chemistry experiments on a small scale with clearly visible results and needing a minimum of equipment.

The resource contains structured experiments with supporting teacher notes for microscale chemistry experiments relating to...

Fast Plants

This range of practical activities and resources provided by ASE is aimed to teach about plants and flowers in schools.Growing fast plants can provide rewarding results in a short time span and the ideas encourage all students to be involved with the activities. Students can examine their own flowers and model-...

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