=1); } function mysql_exists($var,$val,$table) { $var = mysql_real_escape_string($var); // ALWAYS sanitize user input $val = mysql_real_escape_string($val); $table = mysql_real_escape_string($table); return (mysql_num_rows(mysql_query("SELECT * from `$table` where $var = '$val'"))>=1); } function redirect($r) { header("Location: $r"); exit(); } function login($user,$pass,$ip,$destination) { if(mysql_auth_user($user,$pass,"authentication")) { // success $_SESSION["username"] = $user; $_SESSION["password"] = $pass; redirect($destination); } } function logout() { unset($_SESSION["username"]); unset($_SESSION["password"]); notify("You have been logged out","secure"); } function logout_silent() { unset($_SESSION["username"]); unset($_SESSION["password"]); //notify("You have been logged out","secure"); } function send_email($to,$subject="Notification",$message="") { $from = 'no-reply@'.$_SERVER['HTTP_HOST']; $return_path = '-f '.$from; mail($to,$subject,$message,"From: $from\n This email was sent using X-Mailer: PHP/ . $phpversion()"); } function download($file) { header("Content-disposition: attachment; filename=$file"); header("Content-type: application/pdf"); readfile($file); exit; } function notify($msg,$class) { if(isset($msg)) { // NOTIFICATION IS A GO! ?>

No Readings Available for Period #

Reading List for Period #

11-29 Phases of Venus	11-29 Nasa Orbit Simulation	12-4 Orbital Motion Interactive Simulation
12-4 Gravity Simulation Lab	12-5 Acceleration Due to Gravity	12-6 Acceleration Due to Gravity
12-6 Gravity and Orbits Simulation	12-6 Gravitational Fields Simulation	12-8 Projectile Motion
12-8 Phet Projectile Motion	12-8 Nasa Orbit Simulation	1-8 Tides
12-11-12-20 Jumping out of an Airplane	12-11-12-20 Bernoullis Law	12-11-12-20 Flight Simulation
1-8 Tides Reading for URL Questions	1-8 Water Enrichment	1-9 Rotation of the Earth
1-11 Seasons	1-12 Orbit Plex Enrichment	1-17 Lunar Phases
1-19 Solar Eclipse	1-19 Lunar Eclipse	1-19 Lunar Phases interactive
1-29 Planets of the Solar System Enrichment CK-12	1-30 Mercury	1-30 Venus
1-30 Mars	1-31 Jupiter	1-31 Saturn
2-2 Uranus	2-5 Neptune	2-6 Dwarf Planets
2-12 Comets	2-12 Milky Way	2-13 Surface of the Sun
2-14 Magnets	2-20 Ferromagnetic Material	2-21 Earth as a Magnet
2-21 Compass Poles Plix	2-23 Magnetic Reversal	2-27 Magnetic Field
2-28 Electromagnet	3-6 Electromagnetism Enrichment