This lesson sequence is designed to exemplify an approach to practical work that makes strong links with careers which use related skills and techniques.
There are many scientific careers involved in developing a whole range of consumer products; roles that students have probably never considered or even heard of. This lesson sequence is about new product development. In the first lesson students mix up a number of different glues using acidic separated milk which is neutralised with a variety of bases. They use the glues to stick lolly sticks together. In the second, the glues are tested by seeing how much weight the glue can hold before it breaks.
Resources for this lesson comprise: student sheet; teacher guidance; practical guidance; a presentation; and a short video. You should also read our standard health & safety guidance.