This activity is designed to get children thinking about how sand timers work.
Good practices - Testing timers
BotStem European Project
“roBOTics and STEM education for children and primary schools” project n°2017-1-ES01-KA201-038204 – BOTSTEM Project has been funded by the European Union and the SEPIE Spanish National Agency under the ERASMUS+ KA2 Strategic Partnerships for School Education European programme