California to ban sales of new gasoline vehicle – how much money can you save if your car uses less gasoline?

Grade level: 4th – 6th grades

Skills: Multiplication/Division

Environmental Subject: Energy/Climate Change

California decided to ban sales of new gasoline vehicles in 2035 on September 24, 2020.

Ford F150 runs 20 miles and Toyota Prius runs 50 miles on one gallon of gasoline.You drive 200 miles a week. Which car costs more on gasoline and how much more money do you need to spend for gasoline a week if the gas price is $2 a gallon?

  1. Prius, $6 more

2) Prius, $12 more

3) F150, $6 more

4) F150, $12 more



Answer : D

Ford F150 uses [200÷20=10 gallons] of gasoline a week. It costs [$2 x10gallons= $20] a week.

Prius uses [200÷50=4 gallons] of gasoline a week.

It costs [$2 x 4gallons= $8]

Difference is [$20-$8=$12]


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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) Published: March 26, 2020 Price: $6.25

What is the shape of solar panels?

Grade level: 4th -5th grades

Skills: Identify shapes / Volume

Related environmental issues: Energy 

 

Jacob’s family just installed solar panels at home to generate electricity from solar energy. The figure below shows one of the solar panels they have.

 

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  1. Name the shape of the solar panel.
  2. Write down the number of vertices, sides, and faces of the solar panel.
  3. Find the volume of the solar panel.

 

Answer keys

1.rectangular prism
2. 8 vertices, 12 sides, and 6 faces
3.160 x 80 x 4 = 51,200 (cm3)

 

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)

Screen Shot 2020-04-02 at 10.20.25 AM

 

Screen Shot 2020-04-02 at 10.31.32 AM

Screen Shot 2020-04-02 at 10.31.38 AM

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Published: March 26, 2020

Price: $6.25