How Tides Work Poster

Anchor your tides unit with this classroom reference poster for NGSS MS-ESS1-1 and grades 6-8. A clear diagram shows the Moon pulling Earth's oceans into two bulges, so students can see at a glance why most coasts get about two high tides and two low tides every day.

Beneath the diagram, two fact columns compare spring tides and neap tides across the things that matter: how the Sun and Moon line up, which Moon phases cause them, and how big the tidal range is. A keystone strip explains the far-side bulge and the 50-minute daily shift, capturing the model-based ideas the standard targets. It makes a strong wall reference, word-wall companion, or print-and-go anchor chart.

The poster prints cleanly and works as a full-page handout for student notebooks too. Use it to introduce the unit and keep it posted through practice and assessment, alongside the rest of the tides resources.

• Two-bulge diagram plus spring vs neap columns
• Print-and-go classroom anchor chart
• Aligned to NGSS MS-ESS1-1, grades 6-8