Maarten van Duren

Check your response time or compete with friends. There is a way to cheat, usefull for winning bets against your friends.注意使用時間，避免遊戲沉迷本遊戲部分內容或服務可能需要另行 …

Play against an artifcial intelligent opponent by gathering as many points as you can. Simply tap a square to get the points. To add some difficulty, …

Math formulas for FREE. Find formulas, lemmas and theorems you need for all your mathematics courses or projects.Please email us if you have suggestio …

Physics formulas for FREE. Find formulas, lemmas and theorems you need for all your physics courses or projects.Please email us if you have suggestion …

Tover te telefoon om tot vergrootglas! Handige vervanging van de leesbril of handig bij een klein klusje. Kan ook direct foto's maken om later nog een …

Chemistry formulas for FREE. Find formulas, lemmas and theorems you need for all your chemistry courses or projects.Please email us if you have sugges …

Math, chemistry, physics formulas and more for FREE. Find formulas, lemmas and theorems you need for all your science courses or projects.More formula …