We re-capped on gravity and different types of forces then I challenged the groups to build a bridge which should be strong enough to hold my rucksack and hopefully tall enough for my rucksack to pass underneath. One team was quite dysfunctional and all but two teams had a clear idea of how to proceed. Back in class we discussed all the different skills we had used using the ASG framework – great!

Everyone built a beam bridge and understood the different forces at play. They had to suggest how to make the bridges strong enough for me – one was!