I really liked the activity from AstroEdu called Meet Our Neighbours the Moon. I think it would work well with junior classes as it is such a tactile activity to create a template of the moon using a variety of materials such as felt, sequins and tin foil https://astroedu.iau.org/en/activities/meet-our-neighbours-moon/
First I would chat with the class about the moon to elicit what they know, focusing particularly on what they think it looks like, and put any questions that come up on our Wonder Wall. Then I would read aloud the story Moon Earth’s Best Friend by Stacy McAnulty and look at the Wonder Wall and see if we can answer any of the questions following the story and if we have any to add https://www.youtube.com/watch?v=EMtkf8rrxLs
Then using the resource material in the AstroEdu lesson the children would work in small groups to create a tactile image of the moon with teacher support. Once the images are created I would ask the children to present their work to the class and point out different features e.g. craters. We would look at our Wonder Wall and answer any outstanding questions and document the lesson using Seesaw so the children can share their learning at home.