1.
Challenge 1 L. LaRosa http://www.middleschoolscience.com for T. Trimpe 2008 http://sciencespot.net/ First Day

2.
<ul><li>b l a ls s lik </li></ul><ul><li>ic m ret ets s ym </li></ul><ul><li>cishsy p </li></ul><ul><li>m c ytsheri </li></ul><ul><li>ar e ht ieencc s </li></ul><ul><li>t p nal ieencc s </li></ul>The underlined letter is the first letter of each word.

3.
<ul><li>Lab Skills </li></ul><ul><li>Metric System </li></ul><ul><li>Physics </li></ul><ul><li>Chemistry </li></ul><ul><li>Earth Science </li></ul><ul><li>Plant Science </li></ul><ul><li>b l a ls s lik </li></ul><ul><li>ic m ret ets s ym </li></ul><ul><li>cishsy p </li></ul><ul><li>m c ytsheri </li></ul><ul><li>ar e ht ieencc s </li></ul><ul><li>t p nal ieencc s </li></ul>The underlined letter is the first letter of each word.