Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 11704 result(s) returned

Algae Biofuels

As America looks for new alternative fuel sources, biodiesel from algae offers a new and innovative solution.  America uses 180 billion gallons of oil for transportation systems and it is starting to harm the Earth.  Wind, solar, and hydrogen energy forms are impractical due to size, scale, and cost of locations.  This video discusses how the best alternative fuel is bio-fuel.  Ethanol’s from corn and crop based biodiesel have p
Author(s): No creator set

License information
Related content

Solar Power 101 - How Does Sunlight Turn into Electricity

Video is short but gives a thorough explanation of solar photovoltaic systems. How do they work? Sunlight is captured and converted from light to electricity.  The electricity that is made from the convertor is DC (direct current) and needs to be changed to AC (alternating current) by an inverter.  Batteries are attached to the inverter to provide electricity to the house when there is no sun.  The inverter provides the electricity
Author(s): No creator set

License information
Related content

Solar Technology

GE researcher Vlatko Vlatkovic discusses solar technology development at GE from the roof of GE's global research center in New York.  It is a solar panel test set up.  He shows a silicone solar cell and explains how the sun hits the cell and is converted to energy.  He explains that the system is still very expensive and not very attractive and how they are trying to produce a more efficient, less expensive, and a better looking u
Author(s): No creator set

License information
Related content

Resonance
The music and mathematics of nature, Part II. As Galileo noted, the swings of a pendulum increasingly grow with repeated, timed applications of a small force. When the frequency of an applied force matches the natural frequency of a system, large-amplitude oscillations result in the phenomenon of resonance. Resonance explains why a swaying bridge collapsed in a mild wind, and how a wine
Author(s): No creator set

License information
Related content

Dry Bones Connected - Song
This is an animated song. It shows a group of bones and how they little by little get connected and build a skeleton. The skeleton is built as the song is sung. The words to the song appear on the screen and each word is highlighted as it is sung. This is a wonderful teaching companion for a lesson/unit on the human body/skeletal system. 
Author(s): No creator set

License information
Related content

The Skeletal System - Hip-Hop Song
This is an educational hip-hop video reviewing the human skeletal system.
Author(s): No creator set

License information
Related content

End of Feudalism and Beginning of Commerce
Europe experienced radical economic and social changes between the 11th and 14th centuries. The medieval world was based on feudalism, a highly regulated and hierarchical form of society in which everyone had their place and responsibilities. The manorial system, in which lords owned the land worked by their vassals, or serfs, started to wane in the late Middle Ages with the development of nation-states. Medieval cities, dominated by the guilds that brought economic stability, became the centers
Author(s): No creator set

License information
Related content

The Pacemaker of the Heart
The pacemaker of the heart, a tiny area of specialized nervous tissue in the right atrium, sets the heart beating. The electrochemical impulse travels from the SA Node to the AV Node. The AV Node causes contraction of the ventricles. 
Author(s): No creator set

License information
Related content

Oxygen Transport
3-D animation shows the uptake of oxygen by the red blood cells at the alveoli. Shows how hemoglobin binds to the oxygen to transport it through the circulatory system to the tissues. Grades 7-12. 3:09 min.
Author(s): No creator set

License information
Related content

How a Virus Works
This narrated animation explains what a virus is and how it functions. It relates the way a virus works to nanotechnology. The human immune system fights an infection, like a virus, using various types of cells. The body has to adapt to infections and the dead cells are carried to the lymph nodes. 
Author(s): No creator set

License information
Related content

Place Value to 100
In this video learn place value to 100.  Larry uses a whiteboard to show examples and explain the place value system and how it works.  More lessons can be found at: http://www.MathWithLarry.com

Author(s): No creator set

License information
Related content

Place value
Place value helps us determine the value of numbers and understand the relationships between digits and numbers and the number system.  The video looks at place value with whole numbers and decimal numbers and place value activities for students to do.

Author(s): No creator set

License information
Related content

1 of 7_COSMOS-Heaven and Hell
A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then, Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes. For middle school and high school students.
Author(s): No creator set

License information
Related content

2 of 7_COSMOS-Heaven and Hell
A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then, Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes. For middle school and high school students.
Author(s): No creator set

License information
Related content

3 of 7_COSMOS-Heaven and Hell
A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then, Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes. For middle school and high school students.
Author(s): No creator set

License information
Related content

4 of 7_COSMOS-Heaven and Hell
A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then, Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes. For middle school and high school students.
Author(s): No creator set

License information
Related content

5 of 7_COSMOS-Heaven and Hell
A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then, Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes. For middle school and high school students.
Author(s): No creator set

License information
Related content

7 of 7_COSMOS-Heaven and Hell
Cannot locate #6 in the series at this time. A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world about the possible consequences of the increasing greenhouse effect. Then, Dr. Sagan leads us on a tour of our solar system to see how other heavenly bodies have suffered from various cosmic catastrophes. For middle school and high school students.
Author(s): No creator set

License information
Related content

Scale of Planets and Stars
This short video (with no sound, just music) shows the scale of the planets in our Solar System as well as the scale of our Sun to other stars in the universe. Suitable for all ages.
Author(s): No creator set

License information
Related content

Solar System Slideshow
Take an eight-minute tour of our Solar System through this compilation of videos and images.
Author(s): No creator set

License information
Related content

Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586