Do Children Want More Time with Their Full-Time Employed Parents?
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Grades 2-3 Nonfiction Passages.Pdf
24 Nonfiction Passages for Test Practice Grades 2–3 by Michael Priestley New York • Toronto • London • Auckland • Sydney Mexico City • New Delhi • Hong Kong • Buenos Aires 24 Nonfiction Passages for Test Practice: Grades 2-3 © Michael Priestley, Scholastic Teaching Resources Scholastic Inc. grants teachers permission to photocopy the designated reproducible pages from this book for classroom use. No other part of this publication may be reproduced in whole or in part, or stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without written permission of the publisher. For information regarding permission, write to Scholastic Inc., 555 Broadway, New York, NY 10012. Cover design by Solás Cover illustration by Margeaux Lucas Interior design by Creative Pages, Inc. Interior illustrations by Greg Harris, pages 12, 18; Neil Riley, pages 14, 42, 45; Kate Flanagan, pages 20, 40; Doris Ettlinger, page 34 Interior photos by The Everett Collection, New York, pages 7, 28 ISBN 0-439-25608-9 Copyright © 2002 by Michael Priestley. All rights reserved. Printed in the U.S.A. 24 Nonfiction Passages for Test Practice: Grades 2-3 © Michael Priestley, Scholastic Teaching Resources 24 Nonfiction Passages for Test Practice Grades 2–3 Contents Introduction . .4 1. Informational article: Panda Pair . .5 2. Letter from Vera . .6 3. Biography: A Star Is Born . .7 4. How-to guide: Peanut Butter Balls . .8 5. News story: LuLu to the Rescue . .9 6. Announcement: Treasure Hunt . .10 7. Invitation: Calling All Siegels! . .11 8. Informational article: Bye-Bye, Fly . .12 9. Autobiography: A Painter’s Story . -
Variables in Mathematics Education
Variables in Mathematics Education Susanna S. Epp DePaul University, Department of Mathematical Sciences, Chicago, IL 60614, USA http://www.springer.com/lncs Abstract. This paper suggests that consistently referring to variables as placeholders is an effective countermeasure for addressing a number of the difficulties students’ encounter in learning mathematics. The sug- gestion is supported by examples discussing ways in which variables are used to express unknown quantities, define functions and express other universal statements, and serve as generic elements in mathematical dis- course. In addition, making greater use of the term “dummy variable” and phrasing statements both with and without variables may help stu- dents avoid mistakes that result from misinterpreting the scope of a bound variable. Keywords: variable, bound variable, mathematics education, placeholder. 1 Introduction Variables are of critical importance in mathematics. For instance, Felix Klein wrote in 1908 that “one may well declare that real mathematics begins with operations with letters,”[3] and Alfred Tarski wrote in 1941 that “the invention of variables constitutes a turning point in the history of mathematics.”[5] In 1911, A. N. Whitehead expressly linked the concepts of variables and quantification to their expressions in informal English when he wrote: “The ideas of ‘any’ and ‘some’ are introduced to algebra by the use of letters. it was not till within the last few years that it has been realized how fundamental any and some are to the very nature of mathematics.”[6] There is a question, however, about how to describe the use of variables in mathematics instruction and even what word to use for them. -
Kind of Quantity’
NIST Technical Note 2034 Defning ‘kind of quantity’ David Flater This publication is available free of charge from: https://doi.org/10.6028/NIST.TN.2034 NIST Technical Note 2034 Defning ‘kind of quantity’ David Flater Software and Systems Division Information Technology Laboratory This publication is available free of charge from: https://doi.org/10.6028/NIST.TN.2034 February 2019 U.S. Department of Commerce Wilbur L. Ross, Jr., Secretary National Institute of Standards and Technology Walter Copan, NIST Director and Undersecretary of Commerce for Standards and Technology Certain commercial entities, equipment, or materials may be identifed in this document in order to describe an experimental procedure or concept adequately. Such identifcation is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the entities, materials, or equipment are necessarily the best available for the purpose. National Institute of Standards and Technology Technical Note 2034 Natl. Inst. Stand. Technol. Tech. Note 2034, 7 pages (February 2019) CODEN: NTNOEF This publication is available free of charge from: https://doi.org/10.6028/NIST.TN.2034 NIST Technical Note 2034 1 Defning ‘kind of quantity’ David Flater 2019-02-06 This publication is available free of charge from: https://doi.org/10.6028/NIST.TN.2034 Abstract The defnition of ‘kind of quantity’ given in the International Vocabulary of Metrology (VIM), 3rd edition, does not cover the historical meaning of the term as it is most commonly used in metrology. Most of its historical meaning has been merged into ‘quantity,’ which is polysemic across two layers of abstraction. -
Guide for the Use of the International System of Units (SI)
Guide for the Use of the International System of Units (SI) m kg s cd SI mol K A NIST Special Publication 811 2008 Edition Ambler Thompson and Barry N. Taylor NIST Special Publication 811 2008 Edition Guide for the Use of the International System of Units (SI) Ambler Thompson Technology Services and Barry N. Taylor Physics Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899 (Supersedes NIST Special Publication 811, 1995 Edition, April 1995) March 2008 U.S. Department of Commerce Carlos M. Gutierrez, Secretary National Institute of Standards and Technology James M. Turner, Acting Director National Institute of Standards and Technology Special Publication 811, 2008 Edition (Supersedes NIST Special Publication 811, April 1995 Edition) Natl. Inst. Stand. Technol. Spec. Publ. 811, 2008 Ed., 85 pages (March 2008; 2nd printing November 2008) CODEN: NSPUE3 Note on 2nd printing: This 2nd printing dated November 2008 of NIST SP811 corrects a number of minor typographical errors present in the 1st printing dated March 2008. Guide for the Use of the International System of Units (SI) Preface The International System of Units, universally abbreviated SI (from the French Le Système International d’Unités), is the modern metric system of measurement. Long the dominant measurement system used in science, the SI is becoming the dominant measurement system used in international commerce. The Omnibus Trade and Competitiveness Act of August 1988 [Public Law (PL) 100-418] changed the name of the National Bureau of Standards (NBS) to the National Institute of Standards and Technology (NIST) and gave to NIST the added task of helping U.S. -
Advisory Ben;
t \ Book_-U 0 Ja-23_ Copyright N?_ Ad 2 COPYRIGHT DEPOSEasm ( t advisory ben E. V. LUCAS Other Boohs of E. V. LUCAS ENTERTAINMENTS ANTHOLOGIES genbvra’s money THE OPEN ROAD ROSE AND ROSE THE FRIENDLY TOWN VERENA IN THE MIDST HER INFINITE VARIETY THE VERMILION BOX GOOD COMPANY LANDMARKS LISTENER’S LURE THE GENTLEST ART MR. INGLESIDE THE SECOND POST OVER BEMERTON’S THE BEST OF LAMB LONDON LAVENDER REMEMBER LOUVAIN ESSAYS LUCK OP THE YEAR BOOKS FOR CHILDREN GIVING AND RECEIVING THE SLOWCOACH ROVING EAST AND ROVING ANNE’S TERRIBLE GOOD NA¬ WEST ADVENTURES AND ENTHUSI¬ TURE ASMS A BOOK OF VERSES FOR CLOUD AND SILVER CHILDREN A BOSWELL OF BAGHDAD ANOTHER BOOK OF VERSES TWIX EAGLE AND DOVE FOR CHILDREN THE PHANTOM JOURNAL RUNAWAYS AND CASTAWAYS LOITERER’S HARVEST FORGOTTEN STORIES OF LONG ONE DAY AND ANOTHER AGO FIRESIDE AND SUNSHINE MORE FORGOTTEN STORIES CHARACTER AND COMEDY THE “ORIGINAL VERSES” OF OLD LAMPS FOR NEW ANN AND JANE TAYLOR TRAVEL A WANDERER IN VENICE BIOGRAPHY A WANDERER IN PARIS A WANDERER IN LONDON THE LIFE OF CHARLES LAMB A WANDERER IN HOLLAND A SWAN AND HER FRIENDS A WANDERER IN FLORENCE THE BRITISH SCHOOL MORE WANDERINGS IN THE HAMBLEDON MEN LONDON HIGHWAYS AND BYWAYS IN SUSSEX SELECTED WRITINGS EDITED WORKS A LITTLE OF EVERYTHING THE WORKS OF CHARLES HARVEST HOME AND MARY LAMB VARIETY LANE THE HAUSFRAU RAMPANT MIXED VINTAGES ADVISORY BEN A Story BY E. V. LUCAS NEW YORK GEORGE H. DORAN COMPANY COPYRIGHT, 1924, / BY GEORGE H. DORAN COMPANY ADVISORY BEN PRINTED IN THE UNITED STATES OF AMERICA MAl< 25 1924 Q ©C1A77SG39 -V- rt * V* ADVISORY BEN m ADVISORY BEN i In the lives of all, even the least enterprising or adventurous, moments now and then arrive when a decision has to be made; and our demean¬ our at such times throws a strong light upon our character. -
Scalars and Vectors
1 CHAPTER ONE VECTOR GEOMETRY 1.1 INTRODUCTION In this chapter vectors are first introduced as geometric objects, namely as directed line segments, or arrows. The operations of addition, subtraction, and multiplication by a scalar (real number) are defined for these directed line segments. Two and three dimensional Rectangular Cartesian coordinate systems are then introduced and used to give an algebraic representation for the directed line segments (or vectors). Two new operations on vectors called the dot product and the cross product are introduced. Some familiar theorems from Euclidean geometry are proved using vector methods. 1.2 SCALARS AND VECTORS Some physical quantities such as length, area, volume and mass can be completely described by a single real number. Because these quantities are describable by giving only a magnitude, they are called scalars. [The word scalar means representable by position on a line; having only magnitude.] On the other hand physical quantities such as displacement, velocity, force and acceleration require both a magnitude and a direction to completely describe them. Such quantities are called vectors. If you say that a car is traveling at 90 km/hr, you are using a scalar quantity, namely the number 90 with no direction attached, to describe the speed of the car. On the other hand, if you say that the car is traveling due north at 90 km/hr, your description of the car©s velocity is a vector quantity since it includes both magnitude and direction. To distinguish between scalars and vectors we will denote scalars by lower case italic type such as a, b, c etc. -
Outline of Mathematics
Outline of mathematics The following outline is provided as an overview of and 1.2.2 Reference databases topical guide to mathematics: • Mathematical Reviews – journal and online database Mathematics is a field of study that investigates topics published by the American Mathematical Society such as number, space, structure, and change. For more (AMS) that contains brief synopses (and occasion- on the relationship between mathematics and science, re- ally evaluations) of many articles in mathematics, fer to the article on science. statistics and theoretical computer science. • Zentralblatt MATH – service providing reviews and 1 Nature of mathematics abstracts for articles in pure and applied mathemat- ics, published by Springer Science+Business Media. • Definitions of mathematics – Mathematics has no It is a major international reviewing service which generally accepted definition. Different schools of covers the entire field of mathematics. It uses the thought, particularly in philosophy, have put forth Mathematics Subject Classification codes for orga- radically different definitions, all of which are con- nizing their reviews by topic. troversial. • Philosophy of mathematics – its aim is to provide an account of the nature and methodology of math- 2 Subjects ematics and to understand the place of mathematics in people’s lives. 2.1 Quantity Quantity – 1.1 Mathematics is • an academic discipline – branch of knowledge that • Arithmetic – is taught at all levels of education and researched • Natural numbers – typically at the college or university level. Disci- plines are defined (in part), and recognized by the • Integers – academic journals in which research is published, and the learned societies and academic departments • Rational numbers – or faculties to which their practitioners belong. -
Euclidean Spaces and Vectors
EUCLIDEAN SPACES AND VECTORS PAUL L. BAILEY 1. Introduction Our ultimate goal is to apply the techniques of calculus to higher dimensions. We begin by discussing what mathematical concepts describe these higher dimensions. Around 300 B.C. in ancient Greece, Euclid set down the fundamental laws of synthetic geometry. Geometric figures such as triangles and circles resided on an abstract notion of plane, which stretched indefinitely in two dimensions; the Greeks also analysed solids such as regular tetrahedra, which resided in space which stretched indefinitely in three dimensions. The ancient Greeks had very little algebra, so their mathematics was performed using pictures; no coordinate system which gave positions to points was used as an aid in their calculations. We shall refer to the uncoordinatized spaces of synthetic geometry as affine spaces. The word affine is used in mathematics to indicate lack of a specific preferred origin. The notion of coordinate system arose in the analytic geometry of Fermat and Descartes after the European Renaissance (circa 1630). This technique connected the algebra which was florishing at the time to the ancient Greek geometric notions. We refer to coordinatized lines, planes, and spaces as cartesian spaces; these are composed of ordered n-tuples of real numbers. Since affine spaces and cartesian spaces have essentially the same geometric properties, we refer to either of these types of spaces as euclidean spaces. Just as coordinatizing affine space yields a powerful technique in the under- standing of geometric objects, so geometric intuition and the theorems of synthetic geometry aid in the analysis of sets of n-tuples of real numbers. -
Basics of Euclidean Geometry
This is page 162 Printer: Opaque this 6 Basics of Euclidean Geometry Rien n'est beau que le vrai. |Hermann Minkowski 6.1 Inner Products, Euclidean Spaces In a±ne geometry it is possible to deal with ratios of vectors and barycen- ters of points, but there is no way to express the notion of length of a line segment or to talk about orthogonality of vectors. A Euclidean structure allows us to deal with metric notions such as orthogonality and length (or distance). This chapter and the next two cover the bare bones of Euclidean ge- ometry. One of our main goals is to give the basic properties of the transformations that preserve the Euclidean structure, rotations and re- ections, since they play an important role in practice. As a±ne geometry is the study of properties invariant under bijective a±ne maps and projec- tive geometry is the study of properties invariant under bijective projective maps, Euclidean geometry is the study of properties invariant under certain a±ne maps called rigid motions. Rigid motions are the maps that preserve the distance between points. Such maps are, in fact, a±ne and bijective (at least in the ¯nite{dimensional case; see Lemma 7.4.3). They form a group Is(n) of a±ne maps whose corresponding linear maps form the group O(n) of orthogonal transformations. The subgroup SE(n) of Is(n) corresponds to the orientation{preserving rigid motions, and there is a corresponding 6.1. Inner Products, Euclidean Spaces 163 subgroup SO(n) of O(n), the group of rotations. -
Europe's Biggest Party
Europe’s Pick the winning country for your chance to win a prize. Cross out any teams that have not got through to the final of Europe’s 1 biggest party. We suggest players pay a donation of £2 (no donation necessary) to put their biggest Party 2 name next to a country still in the running. Once the sheet is full and the money is in, wait for the winning country to be 3 revealed and give the winner their prize. The could be hald the donations of a United Kingdom Albania Armenia prize of your choosing. 4 The remaining money will go Breast Cancer Now to help us to make life- Michael Rice Jonida Maliqi Srbuk saving breast cancer research and life-changing support happen. Bigger Than Us Ktheju Tokës Walking Out Australia Austria Azerbaijan Belarus Belgium Kate Miller-Heidke PÆNDA Chingiz ZENA Eliot Zero Gravity Limits Truth Like It Wake Up Croatia Cyprus Czech Republic Denmark Estonia Roko Tamta Lake Malawi Leonora Victor Crone The Dream Replay Friend of a Friend Love is forever Storm Finland France Georgia Germany Greece Darude Bilal Hassani Oto Nemsadze S!sters Katerine Duska feat. Sebastian Roi Keep on going Sister Better love Look away Hungary Iceland Ireland Israel Italy Joci Pápai Hatari Sarah McTernan Kobi Marimi Mahmood Az én apám Hatrio mun sigra 22 Home Soldi Latvia Lithuania Malta Moldova Montenegro Carousel Jurij Veklenko Michela Anna Odobescu D mol That Night Run with the lions Chameleon Stay Heaven Portugal North Macedonia Norway Poland Romania Tamara Todevska KEiiNO Tulia Conan Osiris Ester Peony Proud Spirit in the Sky Fire of love (Pali sie) Telemóveis On a Sunday Russia San Marino Serbia Slovenia Spain Sergey Lazarev Serhat Nevena Božovic Zala Kralj & Gašper Šantl Miki Scream Say Na Na Na Kruna Sebi La Venda Sweden Switzerland The Netherlands John Lundvik Luca Hanni Duncan Laurence Too late for love She got me Arcade breastcancernow.org Breast Cancer Now is a working name of Breast Cancer Care and Breast Cancer Now, a charity registered in England and Wales (1160558) and Scotland (SC045584).. -
Download the File “Tackforalltmariebytdr.Pdf”
Käraste Micke med barn, Tillsammans med er sörjer vi en underbar persons hädangång, och medan ni har förlorat en hustru och en mamma har miljoner av beundrare världen över förlorat en vän och en inspirationskälla. Många av dessa kände att de hade velat prata med er, dela sina historier om Marie med er, om vad hon betydde för dem, och hur mycket hon har förändrat deras liv. Det ni håller i era händer är en samling av över 6200 berättelser, funderingar och minnen från människor ni förmodligen inte kän- ner personligen, men som Marie har gjort ett enormt intryck på. Ni kommer att hitta både sorgliga och glada inlägg förstås, men huvuddelen av dem visar faktiskt hur enormt mycket bättre världen har blivit med hjälp av er, och vår, Marie. Hon kommer att leva kvar i så många människors hjärtan, och hon kommer aldrig att glömmas. Tack för allt Marie, The Daily Roxette å tusentals beundrares vägnar. A A. Sarper Erokay from Ankara/ Türkiye: How beautiful your heart was, how beautiful your songs were. It is beyond the words to describe my sorrow, yet it was pleasant to share life on world with you in the same time frame. Many of Roxette songs inspired me through life, so many memories both sad and pleasant. May angels brighten your way through joining the universe, rest in peace. Roxette music will echo forever wihtin the hearts, world and in eternity. And you’ll be remembered! A.Frank from Germany: Liebe Marie, dein Tod hat mich zu tiefst traurig gemacht. Ich werde deine Musik immer wieder hören. -
Chapter 1 Euclidean Space
Euclidean space 1 Chapter 1 Euclidean space A. The basic vector space We shall denote by R the ¯eld of real numbers. Then we shall use the Cartesian product Rn = R £ R £ ::: £ R of ordered n-tuples of real numbers (n factors). Typical notation for x 2 Rn will be x = (x1; x2; : : : ; xn): Here x is called a point or a vector, and x1, x2; : : : ; xn are called the coordinates of x. The natural number n is called the dimension of the space. Often when speaking about Rn and its vectors, real numbers are called scalars. Special notations: R1 x 2 R x = (x1; x2) or p = (x; y) 3 R x = (x1; x2; x3) or p = (x; y; z): We like to draw pictures when n = 1, 2, 3; e.g. the point (¡1; 3; 2) might be depicted as 2 Chapter 1 We de¯ne algebraic operations as follows: for x, y 2 Rn and a 2 R, x + y = (x1 + y1; x2 + y2; : : : ; xn + yn); ax = (ax1; ax2; : : : ; axn); ¡x = (¡1)x = (¡x1; ¡x2;:::; ¡xn); x ¡ y = x + (¡y) = (x1 ¡ y1; x2 ¡ y2; : : : ; xn ¡ yn): We also de¯ne the origin (a/k/a the point zero) 0 = (0; 0;:::; 0): (Notice that 0 on the left side is a vector, though we use the same notation as for the scalar 0.) Then we have the easy facts: x + y = y + x; (x + y) + z = x + (y + z); 0 + x = x; in other words all the x ¡ x = 0; \usual" algebraic rules 1x = x; are valid if they make (ab)x = a(bx); sense a(x + y) = ax + ay; (a + b)x = ax + bx; 0x = 0; a0 = 0: Schematic pictures can be very helpful.