Teach your class how exchange surfaces work with our model!
Organisms constantly take in and release substances from the environment. Specialised exchange surfaces have evolved where this happens which is the topic of this model.
Buy once, print forever!
First, students make models out of the colourful parts of five different exchange surfaces. Then your students use them to look at how they work and the common features between them.
The model covers: villi, alveoli, fish gills, root hair cells and leaves.
Includes colourful class Powerpoint!
Takes just 30 minutes!
Dimensions: alveolus: 7 x 6cm / 3 x 2.5in
Download includes: instructions, templates and classroom Powerpoint presentation.
All you need: paper, scissors, tape.