(:title Car Race InterActivity:) >>&<< [table border=1 cellspacing=3 width=825] [row] [] (:showhide init=show div=div2 lshow="+" lhide="-":) Click and drag the sliders to set the cars speed and starting position. (:div2 id=div2 :) (:html:)
 Then click on the animation buttons: Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)
(:htmlend:) (:div2end :) [tableend] >>-<< [table border=1 cellpadding=5 width=825] [row] []>>&<>&<<%exa b%Problem:%% Set %red%'''RED CAR:''' Speed=15km/h and Start=24km%% and                       %ref%'''BLUE CAR:''' Start=0km%%. >>&<<%mor b%Question:%% If the cars meet in 4 hours, what is %ref%SPEED of BLUE CAR%%? >>&<< Use the activity to find your answer and then talk about the math. >>&<<%pra b%Answer A:%% Using the activity. *Set the 3 sliders. *Think about what it means to "meet in 4 hours". *Find t=4 on the horizontal axis. *Move the 4th slider (speed of blue car) until the lines intersect above t=4. *See that the slider is at 21km/h. >>&<<%dkr b%Answer B:%% Thinking about the math. *Thinking: blue car has to "catch up" 24 km in 4 hours. *This means it must go 24km/4h=6km/h faster than red car. *The speed of red car is 15km/h. *So the speed of blue car is 15km/h+6km/h=21km/h. [tableend] >>-<< [table border=1 cellspacing=5 width=825] [row] [] This InterActivity needs level specific questions and >>&<< [[mailto:emath@emathforall.com?subject=CarRace|Please write me]] with questions for using this activity (include grade level!). [tableend] >>-<<(:showhide init=hide div=div1 lshow="+" lhide="-":) '''Metadata''' (:div1 id=div1 :) [table class=column border=1 width=810 cellpadding=3] [row] [ width=110px] Global [] Car Race Animated Activity [row] []Brief []User speed and position of cars in a race to understand slope and intercept. [row] []Grade []6    (or any time after the idea of linear equations - does NOT require explanation of slope and intercept) [row] []Strand []Algebra and Functions [[http://math247.pbwiki.com/Algebra+and+Functions+with+GeoGebra| AF at Math247]] Algebra [[http://math247.pbwiki.com/Algebra+with+GeoGebra| Algebra at Math247]] [row] []Standard []%popwin%[[standards/ca6af-2-2?action=popopen|CA 6.AF.2.2]] %popwin%[[standards/ca7af-1-5?action=popopen|CA 7.AF.1.5]] %popwin%[[standards/is1al2-4action=popopen|Algebra 1 2.5]] %popwin%[[standards/ACTgr24?action=popopen|ACT GR 24-27]] [row] []Keywords []linear, equation, rate, slope, intercept, dynamic, freeware, applet, offline, online [row] []Comments []This activity is suitable for younger children - just change the questions! [row] []Download [][[http://mathcasts.org/gg/enliven/af/lines/slopes/car_race.zip|Zip for offline use]] [row] []Author []LFS - [[mailto:emath@emathforall.com?subject=ggb_racecar|contact]] [row] []Type []Freeware - Available for Offline and Online Use - Translatable (html) [row] []Use []Requires [[http://www.java.com/en/download/index.jsp|sunJava player]] [tableend] >>-<< ---- >>&<< %rel b%Related Topics%% * %exa c11%[[GlossaryT/slope|Slope]]%% * %dkr%[[activity/runners|Runners Activity]]%% >>&<< ---- [table width=100% border=0] [row] [][[activity/| Attach:main/tri_purple_up_a.gif ]] [[activity/| Up one level]] [r](:html:) (:htmlend:) [tableend]