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CRN 22268 - Revision history
2026-04-20T19:37:06Z
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HelmutKnaust: /* Materials */
2026-04-14T21:31:20Z
<p><span dir="auto"><span class="autocomment">Materials</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Manoucheri.pdf A Teacher-Student Conversation] | [http://helmut.knaust.info/class/201820_4303/Manouchehri_2003.pdf A. Manouchehri, D.A. Lapp, Unveiling Student Understanding: The Role of Questioning in Instruction, Mathematics Teacher Vol. 96 (2003)] |  </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">[[References]] | </ins>[http:///helmut.knaust.info/class/202620_4303/Manoucheri.pdf A Teacher-Student Conversation] | [http://helmut.knaust.info/class/201820_4303/Manouchehri_2003.pdf A. Manouchehri, D.A. Lapp, Unveiling Student Understanding: The Role of Questioning in Instruction, Mathematics Teacher Vol. 96 (2003)] |  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] |  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td></tr>
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HelmutKnaust
http://helmut.knaust.info/mediawiki/index.php?title=CRN_22268&diff=5650&oldid=prev
HelmutKnaust: /* Homework */
2026-04-14T19:23:10Z
<p><span dir="auto"><span class="autocomment">Homework</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*4/9<del class="diffchange diffchange-inline">: </del>'''Lesson 4 (4/16)''': 4.2.3.: 1abc,4,6ab</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*4/9 '''Lesson 4 (4/16)''': 4.2.3.: 1abc,4,6ab</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/7  '''Lesson 3 (4/9)''': 4.2.2.: 2,3,7ab,8ab</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/7  '''Lesson 3 (4/9)''': 4.2.2.: 2,3,7ab,8ab</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2.1: 1ab,2,3bc,4cde</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2.1: 1ab,2,3bc,4cde</div></td></tr>
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HelmutKnaust
http://helmut.knaust.info/mediawiki/index.php?title=CRN_22268&diff=5649&oldid=prev
HelmutKnaust: /* Homework */
2026-04-14T19:22:50Z
<p><span dir="auto"><span class="autocomment">Homework</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*4/9: '''Lesson 4 (4/16)''': 4.2.3.: 1abc,4,6ab</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/7  '''Lesson 3 (4/9)''': 4.2.2.: 2,3,7ab,8ab</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/7  '''Lesson 3 (4/9)''': 4.2.2.: 2,3,7ab,8ab</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2.1: 1ab,2,3bc,4cde</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2.1: 1ab,2,3bc,4cde</div></td></tr>
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HelmutKnaust
http://helmut.knaust.info/mediawiki/index.php?title=CRN_22268&diff=5648&oldid=prev
HelmutKnaust: /* Homework */
2026-04-14T17:15:19Z
<p><span dir="auto"><span class="autocomment">Homework</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*4/7  '''Lesson <del class="diffchange diffchange-inline">2 </del>(4/9)'': 4.2.2.: 2,3,7ab,8ab</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*4/7  '''Lesson <ins class="diffchange diffchange-inline">3 </ins>(4/9)<ins class="diffchange diffchange-inline">'</ins>'': 4.2.2.: 2,3,7ab,8ab</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2.1: 1ab,2,3bc,4cde</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2.1: 1ab,2,3bc,4cde</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/31 '''Lesson 1 (4/2)''': 4.1.1: 1, 4a,7a; 4.1.2: 1a,2b,3</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/31 '''Lesson 1 (4/2)''': 4.1.1: 1, 4a,7a; 4.1.2: 1a,2b,3</div></td></tr>
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HelmutKnaust
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HelmutKnaust: /* Homework */
2026-04-02T20:44:04Z
<p><span dir="auto"><span class="autocomment">Homework</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4<del class="diffchange diffchange-inline">.1</del>.2: 1ab,2,3bc,4cde</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">*4/7  '''Lesson 2 (4/9)'': 4.2.2.: 2,3,7ab,8ab</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*4/2  '''Lesson 2 (4/7)''': 4.2<ins class="diffchange diffchange-inline">.1</ins>: 1ab,2,3bc,4cde</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/31 '''Lesson 1 (4/2)''': 4.1.1: 1, 4a,7a; 4.1.2: 1a,2b,3</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/31 '''Lesson 1 (4/2)''': 4.1.1: 1, 4a,7a; 4.1.2: 1a,2b,3</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/26: Read 3.1.1-3.1.2. Problems 3.1.1: 2abc,3bcd,6,8.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/26: Read 3.1.1-3.1.2. Problems 3.1.1: 2abc,3bcd,6,8.</div></td></tr>
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HelmutKnaust
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HelmutKnaust: /* Homework */
2026-03-31T23:27:51Z
<p><span dir="auto"><span class="autocomment">Homework</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*4/2  '''Lesson 2 (4/7)''': 4.1.2: 1ab,2,3bc,4cde</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/31 '''Lesson 1 (4/2)''': 4.1.1: 1, 4a,7a; 4.1.2: 1a,2b,3</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/31 '''Lesson 1 (4/2)''': 4.1.1: 1, 4a,7a; 4.1.2: 1a,2b,3</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/26: Read 3.1.1-3.1.2. Problems 3.1.1: 2abc,3bcd,6,8.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>*3/26: Read 3.1.1-3.1.2. Problems 3.1.1: 2abc,3bcd,6,8.</div></td></tr>
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HelmutKnaust
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HelmutKnaust: /* Materials */
2026-03-31T22:54:00Z
<p><span dir="auto"><span class="autocomment">Materials</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Manoucheri.pdf <del class="diffchange diffchange-inline">An In</del>-<del class="diffchange diffchange-inline">class </del>Conversation] | [http://helmut.knaust.info/class/201820_4303/Manouchehri_2003.pdf A. Manouchehri, D.A. Lapp, Unveiling Student Understanding: The Role of Questioning in Instruction, Mathematics Teacher Vol. 96 (2003)] |  </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Manoucheri.pdf <ins class="diffchange diffchange-inline">A Teacher</ins>-<ins class="diffchange diffchange-inline">Student </ins>Conversation] | [http://helmut.knaust.info/class/201820_4303/Manouchehri_2003.pdf A. Manouchehri, D.A. Lapp, Unveiling Student Understanding: The Role of Questioning in Instruction, Mathematics Teacher Vol. 96 (2003)] |  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] |  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td></tr>
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HelmutKnaust
http://helmut.knaust.info/mediawiki/index.php?title=CRN_22268&diff=5616&oldid=prev
HelmutKnaust: /* Open Problems */
2026-03-31T22:50:58Z
<p><span dir="auto"><span class="autocomment">Open Problems</span></span></p>
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<td colspan='2' style="background-color: white; color:black;">Revision as of 22:50, 31 March 2026</td>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Open Problems==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Open Problems==</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>*3.1.1: <del class="diffchange diffchange-inline">2abc</del>,3bcd,6,8.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>*3.1.1: <ins class="diffchange diffchange-inline">2ab</ins>,3bcd,6,8.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* '''I2''' Let G be the set of all isometries with a fixed point <math>z^*</math>, i.e., <math>G=\{f:\C\to \C\ | \ F \mbox{ is an isometry and } f(z^*)=z^*\}</math>. Show that G forms a group with the binary operation of composition.  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* '''I2''' Let G be the set of all isometries with a fixed point <math>z^*</math>, i.e., <math>G=\{f:\C\to \C\ | \ F \mbox{ is an isometry and } f(z^*)=z^*\}</math>. Show that G forms a group with the binary operation of composition.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* '''I3''' Let H be the set of all isometries <math>f:\mathbb{C}\to \mathbb{C}</math> of the form <math>f(z)=z_0+ z e^{i\theta}</math> for some <math>z_0\in\C</math> and <math>\theta \in \R</math>. Is H a group with the binary operation of composition?  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* '''I3''' Let H be the set of all isometries <math>f:\mathbb{C}\to \mathbb{C}</math> of the form <math>f(z)=z_0+ z e^{i\theta}</math> for some <math>z_0\in\C</math> and <math>\theta \in \R</math>. Is H a group with the binary operation of composition?  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* '''I4''' Let K be the set of all isometries <math>f:\mathbb{C}\to \mathbb{C}</math> of the form <math>f(z)=z_0+ \overline{z} e^{i\theta}</math> for some <math>z_0\in\C</math> and <math>\theta\in\R</math>. Is K a group with the binary operation of composition?</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* '''I4''' Let K be the set of all isometries <math>f:\mathbb{C}\to \mathbb{C}</math> of the form <math>f(z)=z_0+ \overline{z} e^{i\theta}</math> for some <math>z_0\in\C</math> and <math>\theta\in\R</math>. Is K a group with the binary operation of composition?</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>* 2.2.2: 6,7<del class="diffchange diffchange-inline">,13,15</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>* 2.2.2: 6,7</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Homework==</div></td></tr>
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HelmutKnaust
http://helmut.knaust.info/mediawiki/index.php?title=CRN_22268&diff=5615&oldid=prev
HelmutKnaust: /* Materials */
2026-03-31T22:46:22Z
<p><span dir="auto"><span class="autocomment">Materials</span></span></p>
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<td colspan='2' style="background-color: white; color:black;">Revision as of 22:46, 31 March 2026</td>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[http:///helmut.knaust.info/class/202620_4303/Manoucheri.pdf An In-class Conversation] | [http://helmut.knaust.info/class/201820_4303/Manouchehri_2003.pdf A. Manouchehri, D.A. Lapp, Unveiling Student Understanding: The Role of Questioning in Instruction, Mathematics Teacher Vol. 96 (2003)] | </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] |  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td></tr>
</table>
HelmutKnaust
http://helmut.knaust.info/mediawiki/index.php?title=CRN_22268&diff=5611&oldid=prev
HelmutKnaust: /* Materials */
2026-03-27T01:53:31Z
<p><span dir="auto"><span class="autocomment">Materials</span></span></p>
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<td colspan='2' style="background-color: white; color:black;">Revision as of 01:53, 27 March 2026</td>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>==Materials==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[http://helmut.knaust.info/class/202520_4303/Riemann.nb Riemann Sphere] | </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http:///helmut.knaust.info/class/202620_4303/Papick.pdf ''Questions for Algebra Teachers'', by Ira J. Papick] | [http://helmut.knaust.info/Latex/Isometries/iso.pdf Isometries of the Complex Plane] |  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://www.geogebratube.org/material/show/id/35697 A GeoGebra applet uploaded to ''GeoGebraTube''] (quartic) |  [http://helmut.knaust.info/class/202620_4303/Roots.nb Roots of a parametrized quadratic polynomial] | [http://helmut.knaust.info/class/202620_4303/Quiz01.pdf Quiz 1] | [http://helmut.knaust.info/class/202220_4303/irrational_niven.pdf ''A simple proof that  &pi; is irrational''.] Bull AMS 53 (1947), 509.  | [http://helmut.knaust.info/class/202520_4303/27&37.nb 27&37] | [http://helmut.knaust.info/class/202620_4303/DigitRepresentation.nb Digit Representation] | [http://helmut.knaust.info/class/202520_4303/DecimalRepresentation.nb Decimal Representation] | [https://en.wikipedia.org/wiki/Niels_Henrik_Abel Niels Henrik Abel] | [http://helmut.knaust.info/class/202620_4303/WS01.pdf Worksheet 1] | [http:///helmut.knaust.info/class/202620_4303/Abs-In.mp4 Video: Absolute Value Inequality] | [https://view.teachforamerica.org Teach for America (next deadline 2/2/26)]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[http://www.geogebratube.org/material/show/id/35697 A GeoGebra applet uploaded to ''GeoGebraTube''] (quartic) |  [http://helmut.knaust.info/class/202620_4303/Roots.nb Roots of a parametrized quadratic polynomial] | [http://helmut.knaust.info/class/202620_4303/Quiz01.pdf Quiz 1] | [http://helmut.knaust.info/class/202220_4303/irrational_niven.pdf ''A simple proof that  &pi; is irrational''.] Bull AMS 53 (1947), 509.  | [http://helmut.knaust.info/class/202520_4303/27&37.nb 27&37] | [http://helmut.knaust.info/class/202620_4303/DigitRepresentation.nb Digit Representation] | [http://helmut.knaust.info/class/202520_4303/DecimalRepresentation.nb Decimal Representation] | [https://en.wikipedia.org/wiki/Niels_Henrik_Abel Niels Henrik Abel] | [http://helmut.knaust.info/class/202620_4303/WS01.pdf Worksheet 1] | [http:///helmut.knaust.info/class/202620_4303/Abs-In.mp4 Video: Absolute Value Inequality] | [https://view.teachforamerica.org Teach for America (next deadline 2/2/26)]</div></td></tr>
</table>
HelmutKnaust