// Copyright 2010 Gisele Glosser. All Rights Reserved.
//
// Our interactive math lessons are shareware. You may use our free demo lessons
// on mathgoodies.com only. You may NOT download nor save them. You can purchase
// a license to use all 124 of our lessons off line by visiting:
// http://www.mathgoodies.com/cd/
function checkData(form, whichQuestion) {
var msg;
var noErrors = true;
var testValue = form.entry.value;
var testChar = "";
var testZero = "";
var i = 0;
var temp = "false";
if (testValue == "" || testValue == null) {
msg = "Please enter a fraction in the ANSWER BOX before clicking ENTER.";
noErrors = false;
}
if (noErrors) {
checkAnswer(form, whichQuestion);
} else {
alert(msg);
form.entry.focus();
form.entry.select();
}
}
// Compare form input with correct answer and output response accordingly
function checkAnswer(form, whichQuestion) {
var stringEntered = form.entry.value;
if ((whichQuestion == 1 && stringEntered == "3/5") ||
(whichQuestion == 2 && stringEntered == "5/8") ||
(whichQuestion == 3 && stringEntered == "1/6") ||
(whichQuestion == 4 && stringEntered == "3/7") ||
(whichQuestion == 5 && stringEntered == "7/8")) {
form.result.value = "Correct!";
} else {
form.result.value = "Incorrect. Please press CLEAR and try again.";
}
form.entry.focus();
form.entry.select();
}
var msg = "";
var tempWindow;
var newTags;
// Control message in the status bar
function setMsg(msg) {
window.status = msg;
return true;
}
// Clear a form
function clearForm(form) {
form.entry.value="";
form.entry.focus();
form.entry.select();
}
// if second window is open, then close it
function closeSecondWindow() {
if (tempWindow && !tempWindow.closed) {
tempWindow.close();
tempWindow = false;
return tempWindow;
}
}
// Determine which definition will be displayed in the second window
function whichDef(Def) {
if (Def == "fraction_bar") {
msg = "A" + " fraction bar" + " separates the numerator and denominator of a fraction. It indicates ";
msg += "that a division of the numerator by the denominator will be performed. Another name for a fraction bar is a ";
msg += "vinculum.";
} else {
if (Def == "multiple") {
msg = "A" + " multiple" + " of a number is the product of that number and any other whole number.";
}
}
return msg;
}
// This function opens a small window that contains a Math definition.
function popUpWindow(definition) {
passDef = definition;
whichDef(passDef);
// assemble HTML for new window
newTags = "Definition Window";
newTags += "";
newTags += "Definition Window
";
newTags += msg + "";
newTags += "
";
newTags += "";
if (!tempWindow || tempWindow.closed) {
tempWindow = window.open ("temp.html","tempWindow", "toolbar=no,width=500,height=200,directories=no,status=no,scrollbars=yes,resize=yes,menubar=no");
if (!tempWindow.opener) {
tempWindow.opener = window;
}
timerDelay(newTags);
} else {
timerDelay(newTags);
}
}
function timerDelay(content) {
getContent = content;
setTimeout("timerDelay",1000);
// write HTML to second window
tempWindow.document.write(getContent);
tempWindow.document.close(); // end of writing to the Temp window
tempWindow.focus();
}
function changeme()
{
document.getElementById("b1").innerHTML= "three-fifths";
}
function restoreme()
{
document.getElementById("b1").innerHTML= "answer 1";
}
function changeme2()
{
document.getElementById("b2").innerHTML= "two-sevenths";
}
function restoreme2()
{
document.getElementById("b2").innerHTML= "answer 2";
}
function changeme3()
{
document.getElementById("b3").innerHTML= "five-sixths";
}
function restoreme3()
{
document.getElementById("b3").innerHTML= "answer 3";
}
function changeme4()
{
document.getElementById("b4").innerHTML= "three-eighths";
}
function restoreme4()
{
document.getElementById("b4").innerHTML= "answer 4";
}