Interactive decimal number line (comparing and rounding): http://www.taw.org.uk/lic/itp/itps/dec_num_line_05.swf

Video on powers of 10 introduction video: http://www.educreations.com/lesson/view/powers-of-10-introduction/15819882/?s=p9hoes&ref=app

Video explanation of the powers of 10: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-place-value-decimals-top/cc-5th-mult-powers-of-10/v/powers-of-10

Video on converting powers of 10 from exponential to expanded form: http://www.educreations.com/lesson/view/converting-powers-of-ten-from-exponential-to-expan/15820949/?s=BiU5VE&ref=app

Practicing converting powers of 10 from exponential, expanded, and product form: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-place-value-decimals-top/cc-5th-mult-powers-of-10/e/patterns-in-zeros

Place value and what happens when we multiply or divide by 10:

Video on place value and multiplying by 10 or dividing by 10: http://www.educreations.com/lesson/view/place-value-times-ten-and-divided-by-ten/15822048/?s=Uqc8d0&ref=app

Video on place value and multiplying or dividing by 10: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-place-value-decimals-top/5th-cc-decimals-place-val/v/comparing-place-values-in-decimals

Practice the concept of understanding how much bigger or smaller the same digit would be if it is in different place value positions: http://www.khanacademy.org/math/cc-fifth-grade-math/cc-5th-place-value-decimals-top/5th-cc-decimals-place-val/e/comparing-decimal-place-value

Interactive moving digits by 10( place value): http://www.taw.org.uk/lic/itp/itps/moving_digits_08.swf

Video on multiplying numbers by powers of 10: http://www.educreations.com/lesson/view/multiplying-by-powers-of-10/16254161/?s=7uy85v&ref=app

Video on dividing numbers by powers of 10: http://www.educreations.com/lesson/view/dividing-by-powers-of-10/16254438/?s=xFDIvA&ref=app

Game on identifying place value: http://www.abcya.com/place_value_hockey.htm

Place value whole and decimal numbers: http://www.coolmath.com/prealgebra/02-decimals/01-decimals-place-value-01.htm

Place value interactive: http://ww.kidsmathgamesonline.com/numbers/placevalues.html