Estimation & Rounding
Rounding: http://www.mathslice.com/actionctl.php?actionid=515
Round ing Spaceships (10's): http://www.free-training-tutorial.com/rounding/rounding-spaceships.html
Rounding Sharks (100's): http://www.free-training-tutorial.com/rounding/sharks.html
Round to 10: http://www.dositey.com/2008/Products/Content/Include/ROUND/1/2/launch.php
Round to 100: http://www.dositey.com/2008/Products/Content/Include/ROUND/1/3/launch.php
Nearest 10: http://www.ixl.com/math/grade-2/round-to-nearest-ten
Nearest 100: http://www.ixl.com/math/grade-2/round-to-nearest-ten-or-hundred
Nearest 1000: http://www.ixl.com/math/grade-2/round-to-nearest-ten-hundred-or-thousand
Nearest 10: http://www.mathnook.com/whichonerounds_html_files/WhichOneRoundsPR.swf
Nearest 100: http://www.mathnook.com/whichonerounds100.html
Nearest 1000: http://www.mathnook.com/whichonerounds1000.html
Nearest All: http://www.mathnook.com/whichoneroundsall.html
Estimate Sum Nearest 10: http://www.sadlier-oxford.com/math/enrichment/gr2/ch4/0204a.htm
Rouding Enrichment: http://www.sadlier-oxford.com/math/enrichment/gr2/ch8/0208b.htm
Nearest 1000: http://numbernut.com/advanced/activities/estimate_quiz_round1000.swf
Nearest 100: http://numbernut.com/advanced/activities/estimate_quiz_round1000.swf
Nearest 10: http://numbernut.com/advanced/activities/estimate_quiz_round10.swf
Rounding and a numberline: http://www.mathsframe.co.uk/resources/fullscreen.aspx?ref=roqpweutjbhknqqcujptfawygsobwck_53
Round ing Spaceships (10's): http://www.free-training-tutorial.com/rounding/rounding-spaceships.html
Rounding Sharks (100's): http://www.free-training-tutorial.com/rounding/sharks.html
Round to 10: http://www.dositey.com/2008/Products/Content/Include/ROUND/1/2/launch.php
Round to 100: http://www.dositey.com/2008/Products/Content/Include/ROUND/1/3/launch.php
Nearest 10: http://www.ixl.com/math/grade-2/round-to-nearest-ten
Nearest 100: http://www.ixl.com/math/grade-2/round-to-nearest-ten-or-hundred
Nearest 1000: http://www.ixl.com/math/grade-2/round-to-nearest-ten-hundred-or-thousand
Nearest 10: http://www.mathnook.com/whichonerounds_html_files/WhichOneRoundsPR.swf
Nearest 100: http://www.mathnook.com/whichonerounds100.html
Nearest 1000: http://www.mathnook.com/whichonerounds1000.html
Nearest All: http://www.mathnook.com/whichoneroundsall.html
Estimate Sum Nearest 10: http://www.sadlier-oxford.com/math/enrichment/gr2/ch4/0204a.htm
Rouding Enrichment: http://www.sadlier-oxford.com/math/enrichment/gr2/ch8/0208b.htm
Nearest 1000: http://numbernut.com/advanced/activities/estimate_quiz_round1000.swf
Nearest 100: http://numbernut.com/advanced/activities/estimate_quiz_round1000.swf
Nearest 10: http://numbernut.com/advanced/activities/estimate_quiz_round10.swf
Rounding and a numberline: http://www.mathsframe.co.uk/resources/fullscreen.aspx?ref=roqpweutjbhknqqcujptfawygsobwck_53
Estimate Sums
Estimate Sums: http://www.ixl.com/math/grade-2/estimate-sums
3D: http://www.sadlier-oxford.com/math/enrichment/gr2/ch9/0209b.htm
Robo Works: http://www.mhschool.com/math/mathtriumphs/assets/asset_view.html?s=RW_3_02B&type=RW
3D: http://www.sadlier-oxford.com/math/enrichment/gr2/ch9/0209b.htm
Robo Works: http://www.mhschool.com/math/mathtriumphs/assets/asset_view.html?s=RW_3_02B&type=RW