Introduction P.88
1. Ratios and proportions
Activities P.90: 1,2,3,4
2 Direct porportion
2.1 Solving problems: unitary method
Activities P.91: 1,2,3
2.2 Tables of direct proportionality
2.3 Cross- multiplication (regla de tres)
2.4 The proportion rate
Activities P.93: 4,5,6,7,8,9,10,11
3. Inverse proportion
Activities P.95: 1,2,3,4,5,6,7.
4. Compound Proportionality
Activities P.97: 1,2,3,4
5. Problems of proportional distribution: Direct and inverse
Activities P.99: 1,2,3,4
6. Percentages
6.1 A percentage indicates a proportion
6.2 A percentage is a fraction
6.3 A percentage is associated with a decimal number
6.4 Quickly calculating some percentages
Activities P.101: 1,2,3,4,5,6,7,8,9,10,11
7. Problems with percentages
7.1 Calculating the total from the percentage and the part
7.2 Calculating the percentage from the total and the share
7.3 Percentage increases
7.4 Percentage decreases
Activities P.105: 1,2,3,4,5,6,7,8,9,10,11,12
8. Bank Interest
Activities P.106: 1,2,3
To learn more
P.112 Piensa, experimenta, calcula
P.113 Entrénate resolviendo problemas
Algunos enlaces para repasar
En este video de Unicoos resuelven un ejercico de proporcionalidad compuesta
https://www.youtube.com/watch?v=_Fr7S3TDG4c
Y en estos de Matematicas profe Alex también
ejercicio 1
ejercicio 2
ejercicio 3
Esta es la lista de reproducción completa de Matematicas profe Alex, que tambien tiene reglas de tres simples y porcentajes
lista de reproduccion
Y aqui teneis unos ejercicios interactivos
https://www.vitutor.com/di/p/a_1e.html
