Month:

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

What is Symmetry? – Turtle Pond

  • September 9

Can you find symmetry at a Turtle Pond? Join Dr. Glen Whitney, Founder of the National Museum of Mathematics, as you discover the hidden symmetry found all around you at NorthPark Center's Turtle Pond. What symmetry do you notice around you? 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: htt... CONTINUE READING

What’s the Scale Factor used in the Blueprint for the Welcome Center?

  • September 9

Students from St. Philip's School & Community Center on a math walk stop at the newly constructed Welcome Center at their school. They wonder what the scale factor was that was used to build the space as the builders went from blueprint to real space? This material is based upon work supported by the National Science Foundation under Grant DRL 2115393. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily refle... CONTINUE READING

How many students fit in the chapel while observing social distancing regulations?

  • September 9

Students from St. Philip's School & Community Center on a math walk stop at the school chapel. They wonder what the maximum number of people is that could fit in this space given social distancing protocols during the Covid pandemic? They use the patterns on the carpet, and some simple estimation strategies to answer their question. This material is based upon work supported by the National Science Foundation under Grant DRL 2115393. Any opinions, findings, and conclusions or recommendations... CONTINUE READING

Is the pool circular?

  • September 9

How can you tell if an object is circular? We show you two methods for determining if an object could be a circle and invite you to try it out yourself! This video was supported by City of Dallas Office of Cultural Affairs.... CONTINUE READING

How tall are the gateway arches?

  • September 9

West End Historic District is marked by these beautiful brick arches and we wonder what is the tallest person that could walk under them? We used math to figure that out. This video was supported by City of Dallas Office of Cultural Affairs.... CONTINUE READING

What is the weight of an ice rink?

  • 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. What would happen if water froze on the middle of the Ron Kirk Bridge? Could we create an ice rink on this bridge? talkSTEM members explore this question and estimate how much weight an ice rink would add to the bridge.... CONTINUE READING

How do the Hammering Men move?

  • September 9

How did the artist create movement in this sculpture? Join Dr. Glen Whitney, Founder of the National Museum of Mathematics, as you discover the power of 4 bar linkages, and how they enable the arms of the Hammering Men to move. 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.... CONTINUE READING

How do gears create movement?

  • September 9

Why are gears used? What do they do? Join Dr. Glen Whitney, Founder of the National Museum of Mathematics, as you discover the power of using gears, and how they help the sculpture, Hammering Men, in 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/talks... 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