UGears STEM LAB Arithmetic Kit

The UGEARS Mechanical Multiplier is a fun wooden 3D puzzle based on a children's toy, “Consul the Educated Monkey,” invented in 1915 by William Henry Robertson, an American high school math teacher. Robertson applied for a patent for a toy that ingeniously uses a hinged mechanism to perform simple multiplication, designed "to stimulate children's interest in the study of numbers.”

The Mechanical Addiator is used to add and subtract numbers. To do this, the user enters a number value using the stylus, then uses the stylus to enter a second number. The device then shows the result of the desired mathematical operation, according to where the second number was entered (top row for addition, bottom row for subtraction). But the Addiator is not limited to addition and subtraction—you can also use it to multiply and divide.

The Mechanical Multiplier is a simple and interesting way to learn the “unloved” multiplication tables from 1 to 12, and to understand the simple principle of hinge-lever mechanisms. When the two sliders are moved to various numbers, you will see their product displayed in the window above.

• Age - 8yrs+ 
  
• Keep away from children under 3 yrs.
• Self-Assembly without glue.
• Number of components:  117
• Approx. time of assembly: 2.5 hours
• Made in Ukraine

Addiator size: 8.5*4.3*0.91 in (21.5*11*2.3 cm)
Multiplier size: 9.8*10*1.6 in (24.8*25.5*4 cm)
Package size: 8.07*7.4*2.48 in (20.5*18.8*6.3 cm)