Did you know that up to 8 million tonnes of plastic ends up in the oceans each year? That's too big a number for most of us to imagine, especially if we convert it to kilograms, which this worksheet suggests we do! To really make a point of just how much plastic this is, we challenge the kids to collect and weigh 1kg of waste plastic - quite a challenge, which many will not be able to do. But that's the point.
