Safecracker 50
5 "  diam
5 rings
16 'slices'
 
rotate the wheels to make the sum
of all numbers in a 'slice' equal 50
 
 
Safecracker 40
4-1/2 " diam
4 rings
16 'slices'
 
rotate the wheels to make the sum
of all numbers in a 'slice' equal 40
 
 
Math Snake 9
 
rotate the squares to create 
numbers and operations that
make a valid equation
 
3/4 " x  3/4 " x  5-1/2 "
 
 
Math Snake 7
 
rotate the squares to create 
numbers and operations that
make a valid equation
 
3/4 " x  3/4 " x  4-1/4 "