St. Patrick's Day

Riley sees a rainbow with ends that appear to touch the ground 1 mile apart and reaches a maximum height of 0.5 miles above the ground. If the rainbow is an arc of a circle, how many degrees is the arc that Riley sees?

First, let's draw a diagram: 

Valentine's Day Treats

According to “A History of Valentine’s Day Cards in America” by T.M. Wilson, in 1847 Esther Howland was the first to mass-produce Valentine’s Day cards.  She made them out of lace, paint and expensive paper and each one was individually written by a skilled calligrapher.  The average card sold for $7.50 while others cost as much as $50.  If 10 cents in 1847 would be equivalent to $1.85 today, how much would the average card and most expensive card have cost today?

E-Week 2020: Biomedical Engineering

 

Today's Problem: Biomedical Engineering

Biomedical engineers play a vital role in medical advances and innovations that improve our health and save lives. One application of their work is advancing research into specialized care for patients. This set of problems looks at a recent biomedical invention—artificial hearts for people who suffer from certain forms of heart disease.
 

Thanksgiving Dinner Preparation

In preparation for Thanksgiving dinner, Mrs. Cobble decided to get a new tablecloth for the dining room table.  Her rectangular table measures 3.5 feet by 6 feet, and she would like the tablecloth to hang exactly 9 inches over each side.  What is the area, in square feet, of the ideal tablecloth for Mrs. Cobble?

A Salute to the Flag

In honor of Veteran’s Day, people around the country are flying American flags. For many people, finding flags to buy in stores was next to impossible due to the great demand.  Therefore, many of us got creative, and started making our own handmade flags out of paper, pins, construction paper, fabric, etc.

Best of 2018 School Competition

In honor of this year’s School Competition being released to registered competition coaches for our 2019-2020 Competition Series, see some of last year’s School Competition questions below!

Sprint Round, 19

Josie selected a number n. She divided n by 2 and then subtracted ½ from the result. She took half of that result and then subtracted ½ to get the final result of 10. What is the value of n?

Halloween Time!

Grady, Sophia and Ella Zappone were going trick-or-treating together down a long road with houses only on the right side of the street.  The addresses of the first three houses were 296 Boo Blvd, 300 Boo Blvd and 304 Boo Blvd, and the house numbers continued to increase by 4 down the entire road.  The kids decided to take turns knocking on the doors of the houses, so that Grady knocked at house 296, Sophia knocked at house 300, Ella knocked at house 304, and then Grady started the sequence over at house 308.  Grady will knock on the doors of a lot of houses.  When Grady gets to the first ho