Padlet has been an amazing tool in the classroom. This site has so many tools to use with the students and can be used in any subject. It is great for collaboration, they have storyboards, bulletin boards and breakout rooms too.
The curriculum we currently use to teach Science is
Amplify and it has embedded simulations and hands on activities for the students to do. It also tells a story while teaching science so the students can pretend they are different scientists in the community.
Have you ever wanted to do an online Survey you should take a look at
TeachFX? This is a geat resouce for that, and can be used for exit tickets, Surveys, or feedback on a lesson so you can continue to improve that is what I use it for.