Chemical jigsaw offer a new and highly effective method of teaching chemical formulae and equations. It uses a number of interlocking pieces with plus signs and arrows that enable students to build representations of covalent and ionic compounds and also to model equations.
Advantages: • more effective understanding of formulae
• enhanced motivation • use of OHP for demonstrations
Covalent jigsaw:- In the covalent jigsaw, atoms are represented by coloured disks with cut-outs corresponding to the positions of atoms in the periodic table.
Atoms are joined by clear bonds representing electrons shared between atoms.
The covalent jigsaw is available in two boxed sets.
Ionic jigsaw The ionic jigsaw pieces build on the popular method of using squares and rectangles to aid the determination of ion ratios when constructing formulae.
The parts are translucent and can be placed on an OHP for projection.
The formulae can be identified by shape, colour and identifying symbols/ formulae can be written on them in felt-tip pen.
Please Note: the Junior (KS3) kit is required prior to the Senior (KS4-upgrade) kit.