HANDS-ON ACTIVITIES FOR FOURTH GRADERS:<br>A TOOL BOX FOR DECISION-MAKING AND RECKONING WITH RISK

The intention of this work is to exhibit how children can be provided with a kit of elementary<br>tools for judgment under uncertainty, for good decision making and for reckoning with risk. Children, we<br>claim, can acquire this tool kit through a mosaic of simple, play-based activities which are devised to make<br>them aware of the characteristics of uncertainty. We present a sequence of tasks that build upon each other,<br>beginning with the Wason selection task, moving on to probabilistic tasks, tasks in elementary Bayesian<br>reasoning comparing proportions and, finally, to comparing risks. This research is guided and inspired by<br>empirical results on human decision making in the medical and financial domain.