Distance = 60 mph (rate) x 2 hours (time)
Distance = 120 miles
Distance = 120 miles
__Here is a very good introduction to Distance-Rate-Time problems: http://ltcconline.net/greenl/courses/CAHSEE/Geometry/drt.htm.
PRACTICE
To begin, try doing these basic DRT problems: http://cnx.org/content/m19288/latest/
Now try some problems that are a bit more advanced: http://ltcconline.net/greenl/courses/CAHSEE/FunctionsAlgebra
/multiStep.htm.
Think you have the basics? Here is a quick formative assessment: http://wblrd.sk.ca/~realmath_dev/trucking/timedistance.html Go down the page until you see "Interactive Questions" and do those.
Now, let's get a bit more complex. If you are in Algebra I, your problems probably contain two vehicles, or something going somewhere and back. You are going to want to set up the Distance, Rate, and Time in a box to figure out the equation to use. This website will show you how: http://www.wallace.ccfaculty.org/book/1.10%20Distance.pdf
Here is another website using a box: http://www.mesacc.edu/~pikeu
/mat120/notes/dist_rate_time/dist_rate_time.html Make sure to try the practice problems since you can click on a link to see how they work out the solutions.
Explore this interactive activity. You will see two runners move along a track. As you change the speeds and starting points of the runners, watch the race but also examine a graph of the time-versus-distance relationship. Using different step sizes, can you make the runners cross the finish line at the same time? http://www.nctm.org/standards/content.aspx?id=25037
Does your problem involve going upstream or downstream? Try this: http://www.umsl.edu/~defreeseca/intalg/ch8extra/rate.htm
Do you have a problem that involves head or tail wind? Go here: http://www.algebralab.org/Word/Word.aspx?file=Algebra_DistanceRateTimeSystems.xml
***Very important tip for getting the correct answer = Make sure your units match! You don't want to have one number for hours in the same equation where another number stands for minutes! Make sure you do your conversions before you solve the equations.
ASSESS
Ready to test out your new skills? Here are some great questions - once you work them out you can click on the "solution" links and see how the correct answer is found: http://www2.newpaltz.edu/~pindlinc/WP/Rate/rate_index.html
PRACTICE
To begin, try doing these basic DRT problems: http://cnx.org/content/m19288/latest/
Now try some problems that are a bit more advanced: http://ltcconline.net/greenl/courses/CAHSEE/FunctionsAlgebra
/multiStep.htm.
Think you have the basics? Here is a quick formative assessment: http://wblrd.sk.ca/~realmath_dev/trucking/timedistance.html Go down the page until you see "Interactive Questions" and do those.
Now, let's get a bit more complex. If you are in Algebra I, your problems probably contain two vehicles, or something going somewhere and back. You are going to want to set up the Distance, Rate, and Time in a box to figure out the equation to use. This website will show you how: http://www.wallace.ccfaculty.org/book/1.10%20Distance.pdf
Here is another website using a box: http://www.mesacc.edu/~pikeu
/mat120/notes/dist_rate_time/dist_rate_time.html Make sure to try the practice problems since you can click on a link to see how they work out the solutions.
Explore this interactive activity. You will see two runners move along a track. As you change the speeds and starting points of the runners, watch the race but also examine a graph of the time-versus-distance relationship. Using different step sizes, can you make the runners cross the finish line at the same time? http://www.nctm.org/standards/content.aspx?id=25037
Does your problem involve going upstream or downstream? Try this: http://www.umsl.edu/~defreeseca/intalg/ch8extra/rate.htm
Do you have a problem that involves head or tail wind? Go here: http://www.algebralab.org/Word/Word.aspx?file=Algebra_DistanceRateTimeSystems.xml
***Very important tip for getting the correct answer = Make sure your units match! You don't want to have one number for hours in the same equation where another number stands for minutes! Make sure you do your conversions before you solve the equations.
ASSESS
Ready to test out your new skills? Here are some great questions - once you work them out you can click on the "solution" links and see how the correct answer is found: http://www2.newpaltz.edu/~pindlinc/WP/Rate/rate_index.html