Assessment for formative and summative purposes. Wynne Harlen. What do you mean by assessment?. Is there assessment when: A teacher asks pupils questions to find out what ideas they have about a topic before starting it?
A process of collecting evidence and using it to make inferences about what pupils know and can do.
(As reported in the Cambridge Primary Review, Alexander (Eds) 2010)
All these are situations which inquiry-based classroom science activities should provide and are opportunities for teachers to collect data for assessment.