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biotechnologyliving things use chemical reactions to produce new materials. * * there are several items in the image that rely on biotechnology: biological washing powder
a9 graphs of non-linear functions© boardworks ltd 2005 a9.3 using graphs to solve equations a9.4 solving equations by trial and improvement a9.5 function notation a9.6
ks4 french© boardworks ltd 2005 * of 16 most slides contain notes to accompany the presentation. to access these notes go to ‘notes page view’ (powerpoint
a7 sequencesa a a a a © boardworks ltd 2005 * of 68 in mathematics, a sequence is a succession of numbers that follow a given rule. each number in a sequence is called
cell division and fertilizationhow many cells? an adult human is made up of about 100 trillion cells. that’s 100 000 000 000 000 cells! everyone started out as just
s5 circless5 circles s5.3 tangents and chords © boardworks ltd 2005 naming the parts of a circle a circle is a set of points equidistant from its centre. the distance
s4 further trigonometrya a a a a a s3.4 area of a triangle using ½ab sin c s3.5 the sine rule s4.2 sin, cos and tan of 30°, 45° and 60° s4.6 the cosine
n4 decimals and roundinga a a a a n4.3 calculating with decimals the decimal number system the decimal number system allows us to use the digits 0 to 9 and the place value
n1 integersn1.4 prime factor decomposition n1.5 lcm and hcf integers positive and negative whole numbers … –3, –2, 1, 0, 1, 2, 3, … irrational numbers
no slide titlewe know that we breathe constantly throughout life. also, we know that if we stopped breathing we would eventually die. so, breathing in oxygen (o2) must be
atomic structurecontents all substances are made from very tiny particles called atoms. john dalton had ideas about the existence of atoms about 200 years ago but only relatively
ionic bondingfull electron shells atoms of noble gases, group 8, have completely full outer shells. this makes them very unreactive or stable. 1st shell holds a maximum of
cell division and fertilizationhow many cells? an adult human is made up of about 50 billion cells. that’s 50 000 000 000 000 cells! everyone started out as just one
cell division and fertilizationhow many cells? an adult human is made up of about 100 trillion cells. that’s 100 000 000 000 000 cells! everyone started out as just
ks4 chemistry ks4 chemistry ionic bonding © boardworks ltd 2004 1 of 20 © boardworks ltd 2005 ‹#› of 68 1 recall what is an atom? what is a mixture? what is an compound?…
no slide titleks4 biology how are substances transported? the action in motion multiple choice section * of 53 the next organ system we will be considering can be known by
plant nutritionmultiple-choice quiz all living organisms need food to grow and survive. plants are known as producers because they provide food for many other organisms.
s5 circless5 circles s5.3 tangents and chords © boardworks ltd 2005 naming the parts of a circle a circle is a set of points equidistant from its centre. the distance
n6 ratio and proportionn6.6 graphs of proportional relationships n6.4 inverse proportion * we use ratio to compare two quantities to each other. use this activity to revise
s8 measures* of 51 converting units it is important to be able to convert between a variety of units quickly and accurately. for example, if we are using a formula to find