The first 10 minutes
You can have the most engaging lesson, the most carefully designed activity, and the most aligned assessment—but if your introduction to a new science topic falls flat, you’ll spend the rest of the unit trying to pull students back in.
The truth is, the first 5–10 minutes of a new topic set the tone for everything that follows. That’s when students decide: Is this interesting? Does it matter? Am I going to pay attention? A strong introduction doesn’t just “start” a lesson—it sparks curiosity, activates prior knowledge, and gives students a reason to care about what they’re about to learn.
Here are my top 6 classroom-tested tips to introduce a new topic and grab attention, boost engagement, and make your science lessons stick from the very beginning.

1. Start with a mystery
Present your students with a puzzling phenomenon, image or question. Try “Why do we only see part of the moon at night?” to introduce moon phases or “Which of these objects will sink or float?” to introduce density.
Why this works? Building curiosity lets students know why they’re learning what you’re teaching. Setting a purpose for learning helps boost student desire to learn.
2. Lab Challenge
Give your students an opportunity to engage with the content and become curious about it. I start my pH unit with cabbage juice and some random substances to test – milk, lemon juice, soapy water. I give students test tubes of each substance and challenge them to make the cabbage juice bright pink.
Why this works? Students LOVE being given a chance to “play” with science. They’ll ask to repeat the challenge later in the unit once they have a better grasp of what’s happening. Let them!

3. Quick Demo
Show your students a 1-2 minute demo of something related to the content. Try dropping a feather and a ping pong ball from a ladder to introduce friction.
Why this works? Curiosity keeps them wondering. Hopefully, but the second day of the unit, they’ll be able to figure out why the feather took so long to fall.
4. Tap into Prior Knowledge (Even if it’s wrong!)
A quick partner turn and talk reminds students of what the already know. A KWL (Know, Want to Know, Learned) doc is a more formal way to assess this.
Why it works? This gives you an opportunity to pre-assess informally – do they need to learn this? What do you need to un-teach before you can teach?
5. Give a real world connection
Climate change, for example, can be overwhelming in scope and students often can’t see the big picture. When I taught it last year, we happened to have had a local wildfire, HIGHLY unusual in our part of the world, and I connected the wildfire to climate change in a way that gave students motivation to learn about climate change and how to prevent it.
Why it works? Some students love learning just for learning’s sake. Others need to connect what they learn to a real world problem for it to be meaningful for them.
6. Incorporate movement.
Get students out of their seats with a quick four corners activity, sit/stand response, or even a scavenger hunt.
If you rotate through these strategies, you’ll not only keep things fresh—you’ll start to see students walking into class ready to engage instead of waiting to be told what to do. And that shift makes everything else you do in the lesson more effective.















