Month:

What determines where leaves are positioned on branches?

  • September 9

Leaves are what plants use to gather sunlight, necessary for plants to grow and thrive. This means that it is to a plant's advantage if their leaves' position is such that all leaves receive the most possible sunlight - minimizing overlaps and shadow wherever possible! Different plants use different strategies and arrangements to make this happen, though there are some common trends across many different species. By using a protractor to measure the angles between leaves, we can tease out some o... CONTINUE READING

What Angles do We Make when We Walk?

  • September 9

This video was features two IF/THEN® ambassadors, Dr. Julie Mirpuri and Dr. Kirsten Tulchin-Francis. Dr. Julie Mirpuri is a Physician Scientist at UT Southwestern Medical Center and Dr. Kirsten Tulchin-Francis is the Director of Movement Science at Texas Scottish Rite Hospital for Children and Professor at UT Southwestern Medical Center. Julie and Kirsten answer the questions: What angles do we create walking? How are they important for getting where we need to go? Can you try walking around wi... CONTINUE READING

What’s the Mathematical Mystery Here? Fountain

  • September 9

Join Dr. Glen Whitney, Founder of the National Museum of Mathematics, as you discover the mystery hidden in a seemingly regular fountain at NorthPark Center. This video was supported by NorthPark Center. Supplementary Activity Guides for this video to extend student learning for K-12 grade levels are freely available here: https://talkstem.org/talkstem-activity-guides/... CONTINUE READING

How tall are the flagpoles?

  • September 9

Towering over Dallas City Hall Plaza are 3 flag poles. How do we use similar triangles and shadows to determine their height? This video was supported by City of Dallas Office of Cultural Affairs.... CONTINUE READING

Using arrays, how many windows are there?

  • September 9

What's the best way to figure out the number of windows on the Texas School Book Depository? Math, of course! Watch the video to see how we applied the concept of arrays to answer this question. This video was supported by City of Dallas Office of Cultural Affairs.... CONTINUE READING

How can we measure arches and lines?

  • September 9

Over 7 million people visit the West End Historic District every year! What if they all stood in line to visit? What would that look like? We use math to help us understand this gargantuan number! This video was supported by City of Dallas Office of Cultural Affairs.... CONTINUE READING

What is the speed of the water?

  • September 9

Ronald Kirk Bridge is a pedestrian bridge over the Trinity River in Dallas, connecting downtown Dallas and West Dallas. It is over 2,000 feet long and 60 feet wide. At the Ronald Kirk Bridge, the talkSTEM team found a natural whirlpool in the Trinity River. The video explores a strategy for estimating the speed of water. What other strategies could you use to measure the speed of a liquid? What about objects traveling through air instead of water? At talkSTEM, we know that math isn't always perf... CONTINUE READING

What patterns can you find?

  • September 9

Patterns can be found everywhere, including the hallway! talkSTEM joins faculty at St. Philips Academy in exploring the patterns in these colorful tiles. This video was supported by City of Dallas Office of Cultural Affairs.... CONTINUE READING