20cm 20x20 Geoboard 121 pins set of box

Super STEM Skills: From science and technology to engineering and math, STEM learning help kids build critical thinking and other skills they need for success in school and beyond!

Geoboard  121pins with 20pcs rubber band+1pc nail plate setsize : 20cm nail : 11x11 Other side circle diameter is 9.5cm with 28 pins size: 20 x 20 x 1.5cmS-7115C 

10PCS Yellow Flats 

51PCS Percentage Tiles with TrayBL(100%): 20*2.5*0.3cm BR(50%): 10*2.5*0.3cm BK(33.33%): 6.7*2.5*0.3cm YL(25% ): 5*2.5*0.3cm GR(20%): 4*2.5*0.3cm OR(16.66%):3.3*2.5*0.3cm RD(12.5%): 2.5*2.5*0.3cm PP(10%): 2*2.5*0.3cm PK(8.33%): 1.7*2.5*0.3cm

51PCS Decimal Tiles with Tray

Mathematical cubespackage:100 pcs / set10 colors each color 10 pcssize: 2cm