Materials for 15 work groups

The kit provides simple seesaws, beam balances, spring balances, dial balances and balance beam (lever) calculating machines. Children learn some historical and physical aspects of scales and weighing. 

They also learn 

ƒ to understand the principle of a seesaw 

ƒ to assemble and use a beam balance 

ƒ to calculate with a system of measures 

ƒ a common system of measures 

ƒ to appreciate the advantages of a common system of measures.

Some examples of experiments: 

ƒ from seesaw to balance 

ƒ beam balance 

ƒ Egyptian balance 

ƒ Roman balance 

ƒ Spring scale with calibration 

ƒ Calculator balance (equal-arm lever) 

ƒ Calculator balance (unequal-arm lever)