With this resource, students develop observation skills by investigating the phenomenon of ‘mate-guarding’ in brine shrimp. Following a teacher-led discussion, students generate hypotheses. For example, one of the hypotheses may be that larger females pair with larger males.

These may be tested...

These resources allow students to explore natural selection using different coloured baits (spaghetti ‘worms’) that are selected and eaten by birds. Uneaten ‘worms’ are counted after predation and the ‘worm’ population is replenished in proportion to those colours which remain. After several cycles of predation and...

Produced by the Hamilton Trust, these resources give details of six lessons on light and vision. This includes lesson plans, practical activities and all student materials. Students identify sources of light and revise facts such as light travels in straight lines and opaque objects form shadows. They understand...

In this practical protocol students investigate one way in which bacteria acquire antibiotic resistance through conjugation - horizontal gene transfer from one bacterial strain or species to another.

Plasmid-mediated evolution is fast because whole functional ‘modules’ are lost and gained, rather than the...