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Inserting Javascript

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Math Quiz

Flash cards were pretty good math practice. But, they were always the same math problems, over and over. Lo and behold, JavaScript to the rescue! Just select the difficulty level then click the type of problem you want to practice with, (add, subtract, multiply, and divide) and JavaScript will give you a problem. And, a built-in score checker grades you along the way! Great practice for elementary-aged students just learning their math skills, or for anyone wishing to practice a bit! Easy Moderate Difficult


Insert into <HEAD>
<SCRIPT LANGUAGE="JavaScript"> <!-- Original: Anja Henseler --> <!-- Web Site: http://www.hens.com/binoculars --> <!-- Begin correct=0; wrong=0; function random(maxValue) { day= new Date(); hour= day.getHours(); min=day.getMinutes(); sec=day.getSeconds(); mili=day.getTime() return(((hour3600)+(min60)+(sec)+mili) % maxValue); } function ranom(maxValue) { day= new Date(); mil=day.getTime(); return((mil) % maxValue); } function add() { if(document.quizform.arithmetic[0].checked) maxValue=10; else { if(document.quizform.arithmetic[1].checked) maxValue=30; else { maxValue=60; } } numA=random(maxValue); numB=ranom(maxValue); numC=numA + numB; Answer=window.prompt( numA + "+" + numB + " = ", ""); ans(); } function subtract() { if(document.quizform.arithmetic[0].checked) maxValue=10; else {if(document.quizform.arithmetic[1].checked) maxValue=30; else { maxValue=60 } } numA=random(maxValue); numB=ranom(maxValue); numC=numA - numB; Answer=window.prompt( numA + "-" + numB+ " = ", 0); ans() } function divide() { if(document.quizform.arithmetic[0].checked) maxValue=10; else { if(document.quizform.arithmetic[1].checked) maxValue=30; else { maxValue=60 } } numA=random(maxValue)+1; numB=ranom(maxValue)+1; numC=numA / numB; numC=Math.round(numC) window.alert("Please round your answer off:\n" +".5 or higher rounds one number up\n" +".4 or lower rounds one number down"); Answer=window.prompt( numA + "/" + numB + " = ", 0); ans() } function multiply() { if(document.quizform.arithmetic[0].checked) maxValue=10; else { if(document.quizform.arithmetic[1].checked) maxValue=30; else { maxValue=60 } } numA=random(maxValue); numB=ranom(maxValue); numC=numA * numB; Answer=window.prompt( numA + "" + numB + " = ", 0); ans(); } function check() { if ((correct+wrong) != 0) { score = "" + ((correct / (correct + wrong)) 100); score = score.substring(0,4) + "%"; alert("YOUR SCORE: " + score + "\n" + correct + " correct\n" + wrong + " incorrect") } else alert("You have not completed any exercises yet."); } function ans() { if (Answer == numC) { correct++; msg = "Congratulations, your answer is correct."; } else { wrong++; msg = "Oops! " + Answer + " is incorrect.\n\n" + "The correct answer was " +numC + "."; } score = "" + ((correct / (correct + wrong)) * 100); score = score.substring(0,4) + "%"; alert(msg + "\n\nYOUR SCORE: " + score + "\n" + correct + " correct\n" + wrong + " incorrect") } // End --> </script>

Insert into <BODY>
<center> <form name=quizform> <input type=button value="add" onClick="add()"> <input type=button value="subtract" onClick="subtract()"> <input type=button value="multiply" onClick="multiply()"> <input type=button value="divide" onClick="divide()"> <br> <br> <input type="radio" name="arithmetic">Easy <input type="radio" name="arithmetic" checked>Moderate <input type="radio" name="arithmetic">Difficult <br> <br> <input type=button value="Check Score" onClick="check()"> <input type=button value="Reset Score" onClick="javascript:correct=0;wrong=0;"> </form> </center>

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