6 feet of social distance–How long is 6 feet?

Grade level: 3rd – 5th grades

Skills: Measurement (Length)

Related environmental issues: COVID-19

6 feet of social distance is recommended to protect from COVID-19.

Which expression shows 6 feet?

  1. Ten 6 inch-sandwiches
  2. 1/2 of a yard stick
  3. Twelve 3-inch cards
  4. 1/5 of 10 yards


Answer keys 4 

  1. Ten Twelve 6 inch-sandwiches     
  2. 1/2 2 yard sticks
  3. Twelve Twenty-four 3-inch cards

Factful Environmental Math Problems (2020)

Just published and now available from Amazon  (paperback)

About this book

The objective of Factful Environmental Math Problems is to cultivate our young people’s skills to analyze and evaluate fact-based data for understanding our world, while improving their math skills and critical thinking skills.

With the rise of the Internet and new technology, building skills to analyze and evaluate fact-based data becomes increasingly important for our young people to prepare for this rapidly changing world. These skills minimize their chances of being brainwashed by false information and making uninformed decisions and ultimately help develop their critical thinking skills. (Read more)

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Published: March 26, 2020

Price: $6.25

Is it OK? – thousands of egg-shaped ice balls covering a beach

Grade level: 3rd-5th grades

Skills: measurement (length/mass)

Related environmental issues: climate change

It was reported that a beach in Finland was covered by thousands of egg-shaped balls of ice in the beginning of November, 2019. Experts said that it is a rare weather phenomenon. They ranged from the size of an egg to the size of a football.

1. The length of an egg is 2 inches. The length is a football is one foot. How many times is an football longer than an egg?

2. The weight of an egg is 2 ounces. The weight of an football is one pound. How many times is an football heavier than an egg?

Source) BBC News, Nov 7, 2019. ‘Ice eggs’ cover Finland beach in rare weather


Answer keys

1. 6 times. (12/2=6)

2. 8 times (16/2=8)