grippinglesson

noun
UK /ˈɡrɪpɪŋ ˈlɛsən/
US /ˈɡrɪpɪŋ ˈlɛsən/

A lesson that is so exciting it holds all your attention.

The science teacher gave a gripping lesson about volcanoes that made the whole class sit still.


OTHER MEANINGS

2. A class or talk that is hard to stop listening to because it is so interesting.

Her gripping lesson on ancient Egypt kept everyone asking questions.

3. A teaching moment that feels like an adventure rather than schoolwork.

The field trip turned into a gripping lesson about bees and flowers.

4. A talk or speech that grabs your mind and does not let go.

The coach's gripping lesson about teamwork stayed with the players all season.