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In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves.

Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en línea, en libros de consulta, y en calendarios y almanaques.

Students design and build their own parachutes in this hands-on engineering project.

In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases.

In this bilingual (English/Spanish) activity, learners create family trees by tracing the hands of their family members.

This activity (on pages 13-18) has learners build a model tree and then figure out how to make their tree stand up by itself.

This reading and writing activity (on pages 2-9) teaches what plant parts should be avoided, how a person can get rid of toxins, symptoms of plant poisoning, and how plants create poisons to repel pre

Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en libros de consulta o en línea.

In this hands-on experiment, kids use chemistry to explore whether acids or bases are better at restoring a penny’s shine.

In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.

In this hands-on activity, learners determine the types of chemical reactions achieved when combining different household products.

In this hands-on science experiment, students combine their understanding of the different states of matter and the characteristics of various chemical reactions.

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.