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Professor Dave Explains

1000 Videos (Page 11/21)

13:43 Conversational English (US) B2

The Immune System: Innate Defenses and Adaptive Defenses

Professor Dave Explains - 6 years ago

279,977 views
10:05 Conversational English (US)

Basis and Dimension

Professor Dave Explains - 6 years ago

171,155 views
6:58 Fast English (US)

Practice Problem: Hess's Law

Professor Dave Explains - 6 years ago

33,664 views
5:11 Slow English (US)

Italian Grammar: Past Conditional With Modal Verbs

Professor Dave Explains - 6 years ago

5,090 views
6:37 Fast English (US)

Practice Problem: Calorimetry and Specific Heat

Professor Dave Explains - 6 years ago

19,557 views
7:06 Conversational English (US)

The Circulatory System Part 3: The Lymphatic System

Professor Dave Explains - 6 years ago

79,891 views
12:56 Conversational English (US)

Linear Independence

Professor Dave Explains - 6 years ago

178,336 views
5:23 Slow English (US)

Italian Grammar: Present Conditional With Modal Verbs

Professor Dave Explains - 6 years ago

5,088 views
8:37 Fast English (US)

Measuring Pressure With Barometers and Manometers

Professor Dave Explains - 6 years ago

123,433 views
9:59 Conversational English (US)

The Circulatory System Part 2: Blood Vessels

Professor Dave Explains - 6 years ago

195,794 views
5:57 Conversational English (US) B1

Separating Liquids by Distillation

Professor Dave Explains - 6 years ago

261,166 views
8:04 Conversational English (US)

Past Conditional Tense in Italian: Condizionale Passato

Professor Dave Explains - 6 years ago

16,315 views
9:57 Fast English (US)

Practice Problem: VSEPR Theory and Molecular Geometry

Professor Dave Explains - 6 years ago

15,698 views
9:26 Conversational English (US)

The Circulatory System Part 1: The Heart

Professor Dave Explains - 6 years ago

490,496 views
18:34 Conversational English (US)

Astrology: Fact or Fiction?

Professor Dave Explains - 6 years ago

585,467 views
7:44 Fast English (US)

Practice Problem: Naming Ionic Compounds

Professor Dave Explains - 6 years ago

12,819 views
9:27 Conversational English (US)

Present Conditional Tense in Italian: Condizionale Presente

Professor Dave Explains - 6 years ago

24,212 views
5:36 Conversational English (US)

Practice Problem: Lattice Energy and Ionic Bond Strength

Professor Dave Explains - 6 years ago

64,125 views
10:29 Conversational English (US)

The Composition and Function of Blood

Professor Dave Explains - 6 years ago

307,745 views
13:07 Fast English (US)

The Earth is Definitely Not Flat

Professor Dave Explains - 6 years ago

1,462,333 views
5:49 Conversational English (US)

Subspaces and Span

Professor Dave Explains - 6 years ago

100,769 views
9:49 Conversational English (US)

Examples of s-p Mixing in Molecular Orbital Theory

Professor Dave Explains - 6 years ago

66,304 views
13:05 Conversational English (US)

The Endocrine System

Professor Dave Explains - 6 years ago

464,690 views
11:48 Conversational English (US)

The Future Colonization of Space: Terraforming and Dyson Spheres

Professor Dave Explains - 6 years ago

61,534 views
11:47 Fast English (US)

Column Chromatography

Professor Dave Explains - 6 years ago

150,732 views
5:25 Slow English (US)

Negatives in Italian

Professor Dave Explains - 6 years ago

6,392 views
7:08 Conversational English (US)

Practice Problem: Ionization Energy

Professor Dave Explains - 6 years ago

62,698 views
6:38 Conversational English (US)

The Autonomic Nervous System: Sympathetic and Parasympathetic Divisions

Professor Dave Explains - 6 years ago

453,195 views
12:23 Conversational English (US)

Astrobiology: The Search for Extraterrestrial Life

Professor Dave Explains - 6 years ago

46,478 views
8:41 Conversational English (US)

Understanding Vector Spaces

Professor Dave Explains - 6 years ago

154,123 views
7:27 Conversational English (US)

Practice Problem: Atomic Radii and Ionic Radii

Professor Dave Explains - 6 years ago

35,909 views
13:06 Conversational English (US)

The Peripheral Nervous System: Nerves and Sensory Organs

Professor Dave Explains - 6 years ago

151,400 views
8:14 Fast English (US)

The End of the Universe: Hot or Cold?

Professor Dave Explains - 6 years ago

36,855 views
4:01 Conversational English (US)

Rutherford B. Hayes: His Fraudulency (1877 - 1881)

Professor Dave Explains - 6 years ago

19,607 views
6:02 Slow English (US)

Italian Vocabulary: Nations and Nationalities

Professor Dave Explains - 6 years ago

10,776 views
9:28 Fast English (US)

Thin Layer Chromatography (TLC)

Professor Dave Explains - 6 years ago

199,723 views
12:16 Conversational English (US)

The Central Nervous System: The Brain and Spinal Cord

Professor Dave Explains - 6 years ago

231,114 views
11:55 Conversational English (US)

Dark Matter and Dark Energy: The Frontier of Astronomy

Professor Dave Explains - 6 years ago

79,362 views
6:01 Conversational English (US)

Practice Problem: Electron Configuration and Quantum Numbers

Professor Dave Explains - 6 years ago

24,915 views
7:55 Conversational English (US)

Commands in Italian: Imperativo

Professor Dave Explains - 6 years ago

27,999 views
5:36 Conversational English (US)

Limitations of VSEPR Theory

Professor Dave Explains - 6 years ago

16,389 views
13:52 Conversational English (US)

Types of Tissue Part 4: Nervous Tissue

Professor Dave Explains - 6 years ago

359,446 views
12:18 Conversational English (US)

Evidence for Big Bang Cosmology

Professor Dave Explains - 6 years ago

128,804 views
7:43 Conversational English (US)

Solving Systems Using Cramer's Rule

Professor Dave Explains - 6 years ago

111,155 views
9:35 Conversational English (US)

Double Object Pronouns in Italian: Pronomi Doppi o Combinati

Professor Dave Explains - 6 years ago

35,932 views
10:08 Fast English (US)

Separating Components of a Mixture by Extraction

Professor Dave Explains - 6 years ago

408,175 views
8:28 Conversational English (US)

The Muscular System

Professor Dave Explains - 6 years ago

484,676 views
8:11 Conversational English (US)

Edwin Hubble, Doppler Shift, and the Expanding Universe

Professor Dave Explains - 6 years ago

42,385 views
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