 # Centre for Innovation in Mathematics Teaching - Mathematics Enhancement Progr... MTBoS - Time To Set The Hook... What are you getting ready to teach? Whatever it might be, the MTBoS has probably blogged about it. To find what you're looking for, just type into the search below! Or, if you're not sure what you want and are looking for some inspiration, hit the random button. I've been wanting something like this for a long time, but finally got around to making it. Similar Triangles Definition: Triangles are similar if they have the same shape, but can be different sizes. (They are still similar even if one is rotated, or one is a mirror image of the other). Try this Drag any orange dot at either triangle's vertex. Triangles are similar if they have the same shape, but not necessarily the same size. which is read as "Triangle PQR is similar to triangle P'Q'R' ". Properties of Similar Triangles Corresponding angles are congruent (same measure)So in the figure above, the angle P=P', Q=Q', and R=R'. Rotation One triangle can be rotated, but as long as they are the same shape, the triangles are still similar. In this particular example, the triangles are the same size, so they are also congruent. Reflection One triangle can be a mirror image of the other, but as long as they are the same shape, the triangles are still similar. How to tell if triangles are similar Any triangle is defined by six measures (three sides, three angles). Similar Triangles can have shared parts

Resourceaholic Enigma/Paper Enigma - Franklin Heath Ltd Wiki Although the Enigma cipher as a whole is quite complex (it's complexity is comparable to modern cryptographic algorithms) the individual transformations within it are relatively simple. In fact, they are simple enough that you can decipher an Enigma message with just a paper model. Our model is three-dimensional, to illustrate the wiring of a real Enigma machine. Materials Needed You will need these PDF templates printed on to 2 A4 sheets of paper, a crisp tube (75mm in diameter and at least 225mm long), clear sticky tape and a pair of scissors. Using low-tack "removable" sticky tape can make it easier to swap round and reuse the rotors if you want to do that, but it's not essential. Before you print the templates, please make sure you turn off any scaling options in your printer software so that it is printed at the exact size required. Assembling the Basic Enigma You will fasten these round the crisp tube in this order, from left to right: Using the Basic Enigma Set up: Rotor Turnover

Common Core Problem Based Curriculum Maps | emergent math The following Problem Based Learning (PrBL) curriculum maps are based on the Math Common Core State Standards and the associated scope and sequences. The problems and tasks have been scoured from thoughtful math bloggers who have advanced our practice by posting their materials online. The Scope and Sequences for Algebra 1, Geometry, Algebra 2, Math 9 (Integrated), Math 10 (Integrated), and Math 11 (Integrated) are from Pearson. Grade 3 CCSS PrBL Curriculum Map Grade 4 CCSS PrBL Curriculum Map Grade 5 CCSS PrBL Curriculum Map Grade 6 CCSS PrBL Curriculum Map Grade 7 CCSS PrBL Curriculum Map Grade 8 CCSS PrBL Curriculum Map Math 9 (Integrated) CCSS PrBL Curriculum Map Math 10 (Integrated) CCSS PrBL Curriculum Map Math 11 (Integrated) CCSS PrBL Curriculum Map Algebra 1 CCSS PrBL Curriculum Map Geometry CCSS PrBL Curriculum Map Algebra 2 CCSS PrBL Curriculum Map Be sure to check back often as these curriculum maps are bound to change when new cool activities are added on math blogs worldwide. Geoff