introduction to Chemistry

A 45-page presentation which covers basic principles about atoms, elements, the periodic table, molecules, and bonding. Includes instructions for Lewis dot diagrams, atomic models, and more. 
Meant to be used over at least three days (There are review pages in the presentation which signal my "ending points") and supplemented with more student-led learning and activities. Includes two short videos which are fun and under 3 minutes. Lots of visuals.

http://www.teacherspayteachers.com/Product/Introduction-to-Chemistry-Atoms-Elements-Molecules-and-Bonding-1622176
Part two is found : http://www.teacherspayteachers.com/Product/Introduction-to-Chemistry-part-2-Mixtures-and-Compounds-16302   and covers compounds and mixtures (also includes an inquiry-based student led lab activity.66

Thinking like a scientist

A short presentation with two short video clips embedded.
http://www.teacherspayteachers.com/Product/Thinking-like-a-scientist-1620489

100 short science videos

Available for $1 on TpT
http://www.teacherspayteachers.com/Product/100-short-science-videos-1619875

Most are 5 minutes long or less. Great for when class finishes early or when something needs a little more pep.

Macromolecules

15-slide powerpoint on macromolecules including a lab activity in which students test foods for the presence of starch using iodine.
Found at: http://www.teacherspayteachers.com/Product/Macromolecules-1615990

Domains and Kingdoms

A 33-page powerpoint presentation available here: http://www.teacherspayteachers.com/Product/The-Domains-and-Kingdoms-of-Life-1615438

Classifying Chordates

Presentation available at http://www.teacherspayteachers.com/Product/Classifying-Chordates-1615010

Entomology

A presentation on the major Insect Orders = http://www.teacherspayteachers.com/Product/Insect-Orders-949834

and a presentation of Insect Morphology = http://www.teacherspayteachers.com/Product/Insect-Morphology-1613757

Proteins

These slides include information on protein synthesis and protein types. It is not just a lecture, but includes activities for student self-learning. There is a short youtube clip and two computer activities for students. This would need to be used in a situation where students have access to computers.

http://www.teacherspayteachers.com/Product/Proteins-1611520

Geologic Time

http://www.teacherspayteachers.com/Product/Geologic-Time-1611411

A presentation of the Eons of the Precambrian and the Eras of the Phanerozoic Eon. Includes lots of visuals and slides which summarize important events of the past and hypotheses about the formation of the moon, mass extinctions, and endosymbiosis. Would be a good summary after a unit on geologic time, or could also be used over several days with supplemental activities.

And - Just for fun, here's a photo I took from my microscope of a stained cross-section of a pine needle.

How to argue like a scientist

http://www.teacherspayteachers.com/Product/How-to-Argue-1608773

This is a lecture with discussion prompts available on TpT. Includes information on CER (Claim, Evidence, Reasoning), Measurement issues (Reliability, Validity, Bias), and logical fallacies.